Yukinobu Tatsu – författare

A nerd must fight powerful spirits and aliens all vying for the secret power of his “family jewel,” so who better to fight alongside him than his high school crush and a spirit granny?!Momo Ayase and Okarun are on opposite sides of the paranormal spectrum regarding what they’ll believe in and what they won’t. Their quest to prove each other wrong leads them down a path of secret crushes and paranormal battles they’ll have to participate in to believe!The diorama board game that Momo and Zuma have cleared to secure their release has turned out to be a cursed wicker trunk imprisoning an evil yokai called the Fairy-Tale Card. The yokai quickly possesses Zuma and draws ’Brella Boy’s full power, then uses him to attack Okarun and the others, seriously injuring Momo. Just as all seems lost, Rokuro appears on the scene…with the police?!

A nerd must fight powerful spirits and aliens all vying for the secret power of his “family jewel,” so who better to fight alongside him than his high school crush and a spirit granny?!Momo Ayase and Okarun are on opposite sides of the paranormal spectrum regarding what they’ll believe in and what they won’t. Their quest to prove each other wrong leads them down a path of secret crushes and paranormal battles they’ll have to participate in to believe!Momo has fallen into a cursed diorama that’s laid out like a giant game board. There, she meets a guy named Zuma—the same Zuma who stole Okarun’s family jewel! The two of them team up to retrieve said jewel after Zuma drops it in enemy territory. Now they’ve got to fight some frogs and a giant chef to get it back. Meanwhile, in the outside world, Okarun clashes with Zuma’s friends over how best to rescue them!

A nerd must fight powerful spirits and aliens all vying for the secret power of his “family jewel,” so who better to fight alongside him than his high school crush and a spirit granny?!Momo Ayase and Okarun are on opposite sides of the paranormal spectrum regarding what they’ll believe in and what they won’t. Their quest to prove each other wrong leads them down a path of secret crushes and paranormal battles they’ll have to participate in to believe!To avoid being late for school on Vamola’s first day, Momo takes the mysterious kaiju girl on a shortcut through some off-limits ruins. But the protection spell they perform doesn’t work, and she runs into the slit-mouthed woman who resides there! The two narrowly escape, and it’s only later that Momo realizes the real danger they were in. So why is it that for Momo’s own safety, Seiko is now forbidding her from leaving her room after 10 p.m. for the next week?!

A nerd must fight powerful spirits and aliens all vying for the secret power of his “family jewel,” so who better to fight alongside him than his high school crush and a spirit granny?!Momo Ayase and Okarun are on opposite sides of the paranormal spectrum regarding what they’ll believe in and what they won’t. Their quest to prove each other wrong leads them down a path of secret crushes and paranormal battles they’ll have to participate in to believe!A seemingly unbeatable kaiju is on the attack! Okarun hits on the idea of revisualizing the nanoskin that repaired Momo’s house into a form they can use to fight back, but he lacks the imagination needed, so it’s Kinta Sakata—a.k.a. Erosuke—to the rescue! The nerd uses his vast knowledge of sci-fi to transform Momo’s house into…a giant Buddha robot?!

A nerd must fight powerful spirits and aliens all vying for the secret power of his “family jewel,” so who better to fight alongside him than his high school crush and a spirit granny?!Momo Ayase and Okarun are on opposite sides of the paranormal spectrum regarding what they’ll believe in and what they won’t. Their quest to prove each other wrong leads them down a path of secret crushes and paranormal battles they’ll have to participate in to believe!Momo Ayase strikes up an unusual friendship with her school’s UFO fanatic, whom she nicknames “Okarun” because he has a name that is not to be said aloud. While Momo believes in spirits, she thinks aliens are nothing but nonsense. Her new friend, meanwhile, thinks the exact opposite. To settle matters, the two set out to prove each other wrong—Momo to a UFO hotspot and Okarun to a haunted tunnel! What unfolds next is a beautiful story of young love…and oddly horny aliens and spirits?

A nerd must fight powerful spirits and aliens all vying for the secret power of his “family jewel,” so who better to fight alongside him than his high school crush and a spirit granny?!Momo Ayase and Okarun are on opposite sides of the paranormal spectrum regarding what they’ll believe in and what they won’t. Their quest to prove each other wrong leads them down a path of secret crushes and paranormal battles they’ll have to participate in to believe!Momo struggles to counter a sudden attack by alien clones, but through a temporary truce with her sworn enemy, the alien Serpo, she is able to persevere. However, her troubles are far from over—it’s now after 10 p.m.! In order to avoid the slit-mouthed woman Reiko Kashima, who is still very much on the hunt for her, Momo and Serpo must hide out overnight in a manga cafe. And when Momo finally returns home in the morning, she finds her friends are gravely injured and being treated by none other than Mr. Shrimp!

A nerd must fight powerful spirits and aliens all vying for the secret power of his “family jewel,” so who better to fight alongside him than his high school crush and a spirit granny?!Momo Ayase and Okarun are on opposite sides of the paranormal spectrum regarding what they’ll believe in and what they won’t. Their quest to prove each other wrong leads them down a path of secret crushes and paranormal battles they’ll have to participate in to believe!Having looked on helplessly as Momo fought the Evil , Okarun resolves to become stronger. To help with his training, Turbo Granny takes him, with Aira in tow, to the school’s music room, where they’re attacked by the portraits of composers hanging on the walls! But with some tips from Turbo Granny, Okarun is able to beat them, and he decides then and there to take on the Evil Eye!

A nerd must fight powerful spirits and aliens all vying for the secret power of his “family jewel,” so who better to fight alongside him than his high school crush and a spirit granny?!Momo Ayase and Okarun are on opposite sides of the paranormal spectrum regarding what they’ll believe in and what they won’t. Their quest to prove each other wrong leads them down a path of secret crushes and paranormal battles they’ll have to participate in to believe!A gravely injured Okarun wakes up to an out-of-body experience! And when he answers Momo’s phone, he’s sucked through the telephone wires to where Seiko and Turbo Granny are in the middle of a battle. Thankfully, Turbo Granny is able to teach Okarun a technique for returning to his body that will also help in the impending alien invasion. Elsewhere, Momo and the others are undergoing their own training, but when they return home on the predicted date of the invasion, they find it’s already begun!

A nerd must fight powerful spirits and aliens all vying for the secret power of his “family jewel,” so who better to fight alongside him than his high school crush and a spirit granny?!Momo Ayase and Okarun are on opposite sides of the paranormal spectrum regarding what they’ll believe in and what they won’t. Their quest to prove each other wrong leads them down a path of secret crushes and paranormal battles they’ll have to participate in to believe!Okarun and the others emerge victorious in their fight against the serpent god, but one lingering threat remains—the Evil Eye’s possession of Jiji. Even Grandma Seiko’s exorcism is of no use. To complicate matters further, whenever Jiji comes into contact with cold water, the Evil Eye regains control and attacks! Out of options, the group decides their best course of action is to watch over Jiji together until a proper exorcism can be performed—whenever that may be!

A nerd must fight powerful spirits and aliens all vying for the secret power of his “family jewel,” so who better to fight alongside him than his high school crush and a spirit granny?!Momo Ayase and Okarun are on opposite sides of the paranormal spectrum regarding what they’ll believe in and what they won’t. Their quest to prove each other wrong leads them down a path of secret crushes and paranormal battles they’ll have to participate in to believe!Momo and Okarun task Turbo Granny with uncovering who picked up Okarun’s family jewel from the police station. She succeeds in infiltrating the station but is quickly thwarted by its computer system. Undaunted, the pair decide they’ll try again, but on their way home, they run into the Serpoian Rokuro, and it’s through his powers that they’re able to identify the culprit! But why is it that guy?

A nerd must fight powerful spirits and aliens all vying for the secret power of his “family jewel,” so who better to fight alongside him than his high school crush and a spirit granny?!Momo Ayase and Okarun are on opposite sides of the paranormal spectrum regarding what they’ll believe in and what they won’t. Their quest to prove each other wrong leads them down a path of secret crushes and paranormal battles they’ll have to participate in to believe!Now that the alien invasion has been thwarted, Okarun and the others start a research club with the goal of finding his missing family jewel. As they prepare to get their new club up and running, they can’t help but feel suspicious of their assigned advisor, Mr. Sanjome, of whom they strangely have no memory. Soon after, Okarun’s class rep reveals to him that ever since she picked up a gold ball, he’s looked like…a handsome vampire?!

A nerd must fight powerful spirits and aliens all vying for the secret power of his “family jewel,” so who better to fight alongside him than his high school crush and a spirit granny?!Momo Ayase and Okarun are on opposite sides of the paranormal spectrum regarding what they’ll believe in and what they won’t. Their quest to prove each other wrong leads them down a path of secret crushes and paranormal battles they’ll have to participate in to believe!As Momo and the others fight desperately against the alien invaders, a recovering Okarun finally comes to and is able to join them. Unfortunately for him, it’s Tuesday, and that means one thing—the Evil Eye wants to fight! Thankfully, the invaders quickly capture the Evil Eye’s attention when they get in the way of his match, and with his help, the team begins to crush the enemy. But suddenly, Vamola’s suit is snatched by an octopus-shaped invader, landing the team in dire straits!

A nerd must fight powerful spirits and aliens all vying for the secret power of his “family jewel,” so who better to fight alongside him than his high school crush and a spirit granny?!Momo Ayase and Okarun are on opposite sides of the paranormal spectrum regarding what they’ll believe in and what they won’t. Their quest to prove each other wrong leads them down a path of secret crushes and paranormal battles they’ll have to participate in to believe!It is revealed that Vamola, the girl found inside the kaiju suit, is actually a member of the once thriving Sumerian race from deep space! Unfortunately, her home world was attacked by the aliens presently targeting Earth, leaving her people scattered. She herself had been forced to plot her escape from the planet with a group of other women—including Banga, who found her as a child and raised her. Now, having learned of Vamola’s past, Momo and the others rise to action, but the aliens they face are a formidable enemy.

A nerd must fight powerful spirits and aliens all vying for the secret power of his “family jewel,” so who better to fight alongside him than his high school crush and a spirit granny?!Momo Ayase and Okarun are on opposite sides of the paranormal spectrum regarding what they’ll believe in and what they won’t. Their quest to prove each other wrong leads them down a path of secret crushes and paranormal battles they’ll have to participate in to believe!The Kito clan tosses Okarun and the gang into an alternate-reality version of Jiji’s family home as an offering to the serpent god! There they encounter another of the clan’s sacrifices, a child who goes on to possess the softhearted Jiji. The two of them become the Evil Eye, who then attacks Okarun and Momo. Okarun decides to take him on alone and sends Momo back aboveground to get help. There she comes up with an ingenious plan to get rid of the giant serpent god…but can she pull it off on her own in time to save Jiji?

A nerd must fight powerful spirits and aliens all vying for the secret power of his “family jewel,” so who better to fight alongside him than his high school crush and a spirit granny?!Momo Ayase and Okarun are on opposite sides of the paranormal spectrum regarding what they’ll believe in and what they won’t. Their quest to prove each other wrong leads them down a path of secret crushes and paranormal battles they’ll have to participate in to believe!Okarun, a high school boy obsessed with supernatural phenomena, has lost his precious family jewels in a battle with Turbo Granny! His classmate Aira ends up finding one, and it awakens spiritual powers within her. Around this same time, a strange woman in a red dress appears at the school and attacks Aira, Okarun, and Momo! Who is she, and what’s with her obsession with Aira?

A nerd must fight powerful spirits and aliens all vying for the secret power of his “family jewel,” so who better to fight alongside him than his high school crush and a spirit granny?!Momo Ayase and Okarun are on opposite sides of the paranormal spectrum regarding what they’ll believe in and what they won’t. Their quest to prove each other wrong leads them down a path of secret crushes and paranormal battles they’ll have to participate in to believe!The banana-stealing Serpoians are back! And they’ve trapped Okarun, Momo, and Aira in a void to have another go at stealing their reproductive organs. The subsequent battle causes the powers of the Acrobatic Silky dwelling within Aira to awaken, and she temporarily joins forces with Momo and Okarun. But will they be any match for their opponents after the aliens merge with their minions to form an even greater being?!

A nerd must fight powerful spirits and aliens all vying for the secret power of his “family jewel,” so who better to fight alongside him than his high school crush and a spirit granny?!Momo Ayase and Okarun are on opposite sides of the paranormal spectrum regarding what they’ll believe in and what they won’t. Their quest to prove each other wrong leads them down a path of secret crushes and paranormal battles they’ll have to participate in to believe!Okarun and the gang are off to a hot springs town to investigate the mystery of Jiji’s family. But when they get there, a strange family in cahoots with the police starts causing trouble for them, and before Okarun and the others can get to the bottom of the mystery, Momo ends up as an offering to the local god!

A nerd must fight powerful spirits and aliens all vying for the secret power of his “family jewel,” so who better to fight alongside him than his high school crush and a spirit granny?!Momo Ayase and Okarun are on opposite sides of the paranormal spectrum regarding what they’ll believe in and what they won’t. Their quest to prove each other wrong leads them down a path of secret crushes and paranormal battles they’ll have to participate in to believe!Okarun, a high school boy obsessed with supernatural phenomena, is cursed by Turbo Granny! To break the curse, Okarun and his classmate Momo Ayase challenge Turbo Granny to a high-stakes race. But Turbo Granny’s assassin, a bound spirit in the form of a giant crab, has other plans!

A nerd must fight powerful spirits and aliens all vying for the secret power of his “family jewel,” so who better to fight alongside him than his high school crush and a spirit granny?!Momo Ayase and Okarun are on opposite sides of the paranormal spectrum regarding what they’ll believe in and what they won’t. Their quest to prove each other wrong leads them down a path of secret crushes and paranormal battles they’ll have to participate in to believe!Momo and the others have succeeded in escaping the cursed trunk and defeating the Fairy-Tale Card, but because Momo ate the sweets inside the trunk, she has shrunk to the size of a fairy! While her grandma looks for a way to return her to her previous size, Momo heads back to school in her new, tinier form. It’s there that she hits on the idea to research fairies in the library, and once there, she spots…a pygmy?!

A nerd must fight powerful spirits and aliens all vying for the secret power of his “family jewel,” so who better to fight alongside him than his high school crush and a spirit granny?!Momo Ayase and Okarun are on opposite sides of the paranormal spectrum regarding what they’ll believe in and what they won’t. Their quest to prove each other wrong leads them down a path of secret crushes and paranormal battles they’ll have to participate in to believe!The Fairy-Tale Card notices Zuma’s wavering feelings and attempts to escape from the cursed trunk. Turbo Granny asks Rin, who is waiting on the outside, to use Mai’s power to get them out of the trunk, but Mai refuses! Instead, she transforms Rin into an idol and tells her she must save everyone through her song. Meanwhile, as the Fairy-Tale Card makes its escape, the trunk’s inner world begins to collapse!

A nerd must fight powerful spirits and aliens all vying for the secret power of his “family jewel,” so who better to fight alongside him than his high school crush and a spirit granny?!Momo Ayase and Okarun are on opposite sides of the paranormal spectrum regarding what they’ll believe in and what they won’t. Their quest to prove each other wrong leads them down a path of secret crushes and paranormal battles they’ll have to participate in to believe!Momo and the others successfully capture Yukishiro, the student controlling the pygmies, and manage to get her to explain why she attacked them. However, Yukishiro can't seem to remember the teacher who threatened her and forced her powers onto her. The group decides to enlist her help in tracking down this mysterious teacher. Meanwhile, as Seiko is consulting her occult friends about how to return Momo to normal, she’s attacked by a horde of…kung fu zombies?!

A nerd must fight powerful spirits and aliens all vying for the secret power of his “family jewel,” so who better to fight alongside him than his high school crush and a spirit granny?!Momo Ayase and Okarun are on opposite sides of the paranormal spectrum regarding what they’ll believe in and what they won’t. Their quest to prove each other wrong leads them down a path of secret crushes and paranormal battles they’ll have to participate in to believe!Rin and Yukishiro were reduced to nothing but heads by the severed-head dribblers, but thanks to Aira and Kawabanga’s quick thinking, they manage to get their bodies back! Yukishiro is now able to remember that the person who’d been threatening students and providing them with knives was their teacher Mr. Murakami. Meanwhile, as their classmate Hase launches an attack alongside aliens from outer space, Okarun and Kinta find themselves on the defensive, unable to do anything but hold the line!