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?!