My Isekai Life: I Gained a Second Character Class and Became the Strongest Sage in the World! manga volume 17 features story by Shinkoshoto with art by Huuka Kazabana and Ponjea.

While on a quest to clear out an infestation of wraiths haunting a nearby forest, Yuji stumbles on a mysterious laboratory hidden among the trees. With the help of his trusty Slimes, he infiltrates the facility, stumbling on the existence of a shady and incredibly dangerous organization. To make matters worse, they somehow know all about the infamous Monster Tamer, Yuji…

My Isekai Life: I Gained a Second Character Class and Became the Strongest Sage in the World! manga volume 18 features story by Shinkoshoto with art by Huuka Kazabana and Ponjea.

While on a reconnaissance mission inside a creepy laboratory hidden in the middle of the wraith infested forest, Yuji's Slimes are spotted by the facility's security system. With the poor Slimes caught in the cross-hairs of the bloodthirsty system, programmed to protect the organization at any cost, will Ancient Rhino and Yuji make it in time to save them?!

My Isekai Life: I Gained a Second Character Class and Became the Strongest Sage in the World! manga volume 19 features story by Shinkoshoto with art by Ponjea and Huuka Kazabana.

Yuji learns of a book containing important information regarding the evil organization known as the Laboratory. Unfortunately, the book is locked up within the Royal Academy, meaning the only way to access it is by...enrolling as a student?! Faced with his dreaded nemesis, the entrance exam, will his skills be good enough to let him pass?