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!

One day, Kubo Tamotsu, an ordinary office worker, is suddenly reincarnated in another world as a 6-year-old slave. Picked up by the Basam Marquess, he was raised as "Linus," a Barrier Master, and continued developing his abilities at a remarkable rate. Just when he was on the verge of serving as a Royal Barrier Master, the Palace comes under attack by foes unknown. Linus heads to help his Masters, but—?!

One day, Linus is suddenly reincarnated in another world and raised to become a superior Barrier Master in the Basam Marquess' Household. However, they are caught up in the Royal Army's rebellion and, along with the Royal Capital, the Marquess' family collapses. Having worked desperately to overcome his sadness, Linus finally reaches the neighboring country, the Hideta Empire. What new turmoil awaits him there?!

ごく普通のサラリーマンだった久保たもつは、ある日突然6歳の奴隷として異世界に転生していた。【結界師】リノスとして育ててくれたバーサーム侯爵家は、王国軍の反乱に巻き込まれ崩壊してしまう。必死に悲しみを乗り越えたリノスは、隣国のヒーデータ帝国で新たな生活を始める。 魔物の美少女ペーリスと、奴隷市から助け出した獣人の美女メイリアスと共に、賑やかな日々を過ごしていたリノス。しかし一方で、帝国では第一皇女であるリコレットを巻き込んだ、巨大な陰謀が動き出そうとしていた。やがてそれはリノスのもとにも波及して──!?「小説家になろう」発、大人気異世界冒険ファンタジー、コミカライズ第5巻!!

Suddenly reincarnated in another world as a six-year-old slave, Linus has grown as a talented Barrier Master. Having rescued the First Princess Ricolette from a conspiracy, he has somehow found himself engaged to her! After their formal introductions, Ricolette moves to Linus' mansion and immediately opens up to Peris and Meirius. However, Meirius has feelings that even she doesn't understand and seems troubled...

ごく普通のサラリーマンだった久保たもつは、ある日突然6歳の奴隷として異世界に転生し、優秀な【結界師】リノスとして育てられる。 新たにクルムファル領の領主に任命されたリノスは、荒れ果てた町を復興すべく、毎日奔走していた。クルルルカンの少女、フェリスと、ポセイドンの娘であるルアラという新しい仲間の力を借りて、魚の大量発生に見舞われ、漁に出られなくなってしまった港町や、塩害で壊滅的になってしまった農業の再生に挑む――！　「小説家になろう」発、大人気異世界冒険ファンタジー、コミカライズ第8巻！！