One Peace Books announced last week, through an exclusive post with Behind the Manga, that it has licensed three new manga series, including the manga adaptation of The Ossan Newbie Adventurer, Trained to Death by the Most Powerful Party, Became Invincible. 

Other newly licensed titles include My New Devil Wife and Tamer: Trash-Tier to Top-Tier. All three titles will be released throughout Fall 2025. 

Here are the details for the new series: 

The Ossan Newbie Adventurer, Trained to Death by the Most Powerful Party, Became Invincible

Manga Art: Ken Ogino

Original Story: Kiraku Kishima

Original Character Design: Tea

The first volume will be released on September 23, 2025. The series inspired a 12-episode TV anime adaptation in 2024. 

Synopsis: 

“Off to a late start?” Yeah, well who says you can only begin your adventure when you’re young? 

“The early bird catches the worm.” Or so they say. Yet our hero, Rick Gladiator, passed his 30th birthday before taking even his first step as an adventurer. He may just be getting started, but he’s already showing S-Rank level powers. His teachers, the legendary party Orichalcum Fist, are monstrously strong (literally — check out the dragon and vampire), and they’ve put him through a training regimen from hell. Now, Rick faces down the elite adventurers who scoff at him, prepared to teach them a lesson about respecting their elders—and they may just have to learn it the hard way.

My New Devil Wife

Manga Art: Tonarikeru

Original Story: Shiryu

The first volume will be released on October 21, 2025. 

Synopsis: 

Mercenary adventurer Theo Aspel is tragically weak, leaving him no choice but to repeatedly joins various parties—only to get kicked out. In order to get stronger, he succeeds at summoning a demon that will grant him a wish. But the minute he sees her, his wish to get stronger flies straight out the window. This devil, who hadn’t been summoned in many years declares: “I will grant your wish, but you must give me something precious to you.” 

Theo stutters out a reply: “W—will you marry me?” 

The devil is stunned to say the least, but grants his wish, making them husband and wife. They embark on a happy married life together, causing quite a stir around them along the way. This is a story of a boy and a girl that’s just a tiny smidge dirty.

Tamer: Trash-Tier to Top-Tier

Manga Art: Niwa Rhythm

Original Story: Tamaki Yoshigae

Original Character Design: Katto

The first volume will be released on November 4, 2025. 

Synopsis: 

Tamer. This fantasy profession cultivates relationships with almighty monsters, boasting abilities to make even the greatest hero weep in wonder. One such tamer, famed for the power of his companion beasts, gets caught up in an incident involving storage magic and is reborn into a totally different world as a youth named Varius.

Here, he’s faced with a terrible change to the status quo: tamers are seen as nothing but the lowest of the low. “I’ll never let you insult tamers again!” Varius sets out to prove that the tamer really is the ultimate profession. Thus begins the story of the overpowered tamer who seeks to overturn the very foundations of his world!

Source: Behind the Manga Official Twitter, Behind the Manga Website