JEALOUSY TURNS PROSPERITY INTO PERIL!Linus and his companions have restored the once-ruined Krumfal territory into a thriving hub of trade. With fertile farmlands, bountiful seas, and a bustling new shop in the imperial capital, the region is flourishing like never before. The future looks brighter every day.But success breeds envy. Fearing that his own subjects may abandon him for Krumfal's prosperity, the jealous Baron Gragoreyl schemes to take it all for himself! With enemies gathering at his gates, Linus must rally his allies and defend the land he worked so hard to rebuild. Can Linus protect Krumfal from this new threat?

At 34 years old, Kubo Tamotsu works at an exploitative company only to wake up one day in an unfamiliar world, reincarnated into the body of a six-year-old. Not aware of his innate “Barrier Master” skills, he finds himself on the slave market, and up for auction! When no one bids on him and he’s queued for disposal, he is rescued in the nick of time by Marquess Basam. He will be raised as the Marquess' personal Barrier Master under a new name, “Linus,” and his talent as a Barrier Master will grow day by day. His troubles never seem to end, as he struggles to survive!

The household of the Basam Marquess, who raised him as a Barrier Master named Linus, gets caught up in the Royal Army’s rebellion and falls. Desperately overcoming his grief, Linus begins a new life in the neighbouring Hideta Empire. One day, while resolving trouble concerning the First Princess and helping a pretty demon girl, he meets a beautiful part-human, part-sheep woman in the slave market...Series Overview: At 34 years old, Kubo Tamotsu works at an exploitative company only to wake up one day in an unfamiliar world, reincarnated into the body of a six-year-old. Not aware of his innate “Barrier Master” skills, he finds himself on the slave market, and up for auction! When no one bids on him and he’s queued for disposal, he is rescued in the nick of time by Marquess Basam. He will be raised as the Marquess' personal Barrier Master under a new name, “Linus,” and his talent as a Barrier Master will grow day by day. His troubles never seem to end, as he struggles to survive!

An isekai fantasy about becoming a legendary guardian!At 34 years old, Kubo Tamotsu works at an exploitative company only to wake up one day in an unfamiliar world, reincarnated into the body of a six-year-old. Not aware of his innate “Barrier Master” skills, he finds himself on the slave market, and up for auction! When no one bids on him and he’s queued for disposal, he is rescued in the nick of time by Marquess Basam. He will be raised as the Marquess' personal Barrier Master under a new name, “Linus,” and his talent as a Barrier Master will grow day by day. His troubles never seem to end, as he struggles to survive!

AN ACOLYTE OF CHIVALRY AND SECURITYIt was an ordinary day when Linus found himself reincarnated in another world and blessed with the power to become a Barrier Master. Through years of dedicated training, he quickly developed his skills. But just as he was poised to become a Barrier Master of the royal family, Juka Palace is attacked by an unknown foe. Linus rushes to their rescue with Eryl, hoping he’s developed his skills well enough to save everyone!

JEALOUSY TURNS PROSPERITY INTO PERIL!Linus and his companions have restored the once-ruined Krumfal territory into a thriving hub of trade. With fertile farmlands, bountiful seas, and a bustling new shop in the imperial capital, the region is flourishing like never before. The future looks brighter every day.But success breeds envy. Fearing that his own subjects may abandon him for Krumfal's prosperity, the jealous Baron Gragoreyl schemes to take it all for himself! With enemies gathering at his gates, Linus must rally his allies and defend the land he worked so hard to rebuild. Can Linus protect Krumfal from this new threat?

At 34 years old, Kubo Tamotsu works at an exploitative company only to wake up one day in an unfamiliar world, reincarnated into the body of a six-year-old. Not aware of his innate “Barrier Master” skills, he finds himself on the slave market, and up for auction! When no one bids on him and he’s queued for disposal, he is rescued in the nick of time by Marquess Basam. He will be raised as the Marquess' personal Barrier Master under a new name, “Linus,” and his talent as a Barrier Master will grow day by day. His troubles never seem to end, as he struggles to survive!

The household of the Basam Marquess, who raised him as a Barrier Master named Linus, gets caught up in the Royal Army’s rebellion and falls. Desperately overcoming his grief, Linus begins a new life in the neighbouring Hideta Empire. One day, while resolving trouble concerning the First Princess and helping a pretty demon girl, he meets a beautiful part-human, part-sheep woman in the slave market...Series Overview: At 34 years old, Kubo Tamotsu works at an exploitative company only to wake up one day in an unfamiliar world, reincarnated into the body of a six-year-old. Not aware of his innate “Barrier Master” skills, he finds himself on the slave market, and up for auction! When no one bids on him and he’s queued for disposal, he is rescued in the nick of time by Marquess Basam. He will be raised as the Marquess' personal Barrier Master under a new name, “Linus,” and his talent as a Barrier Master will grow day by day. His troubles never seem to end, as he struggles to survive!

An isekai fantasy about becoming a legendary guardian!At 34 years old, Kubo Tamotsu works at an exploitative company only to wake up one day in an unfamiliar world, reincarnated into the body of a six-year-old. Not aware of his innate “Barrier Master” skills, he finds himself on the slave market, and up for auction! When no one bids on him and he’s queued for disposal, he is rescued in the nick of time by Marquess Basam. He will be raised as the Marquess' personal Barrier Master under a new name, “Linus,” and his talent as a Barrier Master will grow day by day. His troubles never seem to end, as he struggles to survive!

AN ACOLYTE OF CHIVALRY AND SECURITYIt was an ordinary day when Linus found himself reincarnated in another world and blessed with the power to become a Barrier Master. Through years of dedicated training, he quickly developed his skills. But just as he was poised to become a Barrier Master of the royal family, Juka Palace is attacked by an unknown foe. Linus rushes to their rescue with Eryl, hoping he’s developed his skills well enough to save everyone!