Hajime Naehara – illustratör

In a world where crests grant powers that decide one’s fate, Prince Heale is born with Cave King—a crest just as obscure and useless as he is. Deemed a disgrace to his family, he’s exiled to a barren, deserted island without a single living thing in sight. Alone and miserable but determined to survive, he reaches for a pickax to expand the cave he takes shelter in—and uncovers the true power of his crest!

It turns out Cave King makes mining and building within caves as easy as breathing. Useless no more! Instead of a life in limbo waiting for rescue, what Heale finds on this island are otherworldly discoveries and life-changing encounters!

In a world where crests decide one’s fate, Prince Heale is born with Cave King—a crest just as worthless as he is. Deemed a disgrace to his family, he’s exiled to a barren, deserted island with not a plant nor soul in sight. Alone, miserable, but determined to survive, he reaches for a pickaxe to expand the cave he intends to make his new home—and discovers the true power of his crest!

It turns out Cave King makes cavern mining as easy as breathing. And as Heale digs deeper into the island, he discovers one otherworldly mineral after another. Who’s worthless now?

But valuable ore isn’t the only thing Heale finds on his mining adventures. He soon befriends slimes and saves goblins that wash ashore. And together as one big family, they’ll work to overcome any challenge on the road to developing the island into their own little paradise.

Heale and Riena have confessed their feelings for each other, but life isn’t about to give them a break—they are interrupted by the arrival of a pirate ship! Orc pirates are the newest additions to Sheol’s community, but there’s friction between them and the goblins. Heale hopes to bridge the rift between the two races, but he understands that some things can’t be rushed. Instead, he focuses on what he can do—deciding the island’s next big construction project!

Sheol has developed so much that all the residents can live a comfortable life, so Heale sets his sights on trade. But the most experienced sailors, the orcs, are reluctant to leave land—they’ve been traumatized by their encounter with a monster on the ocean. Furthermore, new discoveries underground and some increasingly powerful invaders throw a wrench into Heale’s plans. It’s an uphill battle, but Heale’s trusty comrades will support him every step of the way!

Alone, shunned, and powerless—that was how Heale would describe his past self in Sanphales. But in a strange twist of fate, all of that changes after his banishment. The Sheol Reef community continues to grow, packed with slimes, goblins, spiders, a naked guy, and more—each with a unique talent! Together, they develop their once-barren island into a thriving domain in its own right.

Armed with the power of Cave King and the otherworldly minerals he discovers, Heale finds a happy life finally within his grasp. Feasting, building farms, forging bonds—life is looking up for the residents of Sheol Reef. But then, Heale learns that the surrounding ocean currents may bring more than blessings to their shores... Heale must face challenges new and old: defending his idyllic domain and putting his own demons to rest!

Riale’s vision of a leviathan shatters the peaceful life on Sheol Reef. To defend their new home, Heale and his people must prepare for the attack of the mythical beast that once slaughtered the Tiberis tribe. But how can they defeat a creature immune to both weapons and magic? Heale’s gamble depends on digging out yet another miracle from the mining shafts of Sheol.

The entire community comes together for this all-hands-on-deck situation, pouring in every drop of effort and wisdom they have. Finally, the fateful day comes. The leviathan arrives, a towering beast piercing the heavens themselves—and it’s not alone. Will Sheol conquer the invaders, or will everything crumble beneath their might?

With the leviathan slain, peace has returned to Sheol. Everyone gets to catch their breath and recover while welcoming the new additions to the community. That is, until exciting discoveries underground appear out of nowhere!The first on the list is a hot spring—and who can say no to a nice bath? Certainly not the residents of Sheol, so it’s time for yet another grand construction project! The second is a long-anticipated discovery: more ruins, this time equipped with ancient technology. Finally, Heale gets a glimpse of the island’s mysterious past...which might have heavier implications than he ever expected. But there’s no need to fear, because his trusty comrades have some surprises of their own...

After a period of respite and growth, it’s finally time to move forward. Camus and her crew set sail, aiming to fetch their families and find trade partners, but not before Camus voices her suspicions: The combination of , the miraculous minerals, and the ancient ruins is an astounding coincidence. Is it truly simple chance at play? Or did the king of Sanphales, knowing ’s true power, serve his own agenda by dispatching Heale to Sheol? There’s only one way to find out, and that’s to dig down—a specialty of the Sheol mining team by now. Together with his teammates, Heale ventures into the mysterious underground of Sheol Reef...and what awaits him are new encounters and shocking discoveries!