My Isekai Life: I Gained a Second Character Class and Became the Strongest Sage in the World! manga volume 14 features story by Shinkoshoto with art by Huuka Kazabana and Ponjea.

Yuji Sano was a normal guy working a soul-sucking nine-to-five job when he suddenly found himself transported to a fantasy world where he restarted his life as a Monster Tamer. After befriending the Slimes, Yuji is quickly able to gain a second character class, ranking up his stats and learning new skills as he encounters one surprise after another.

Yuji begins investigating a brand-new type of threat that lurks on Evildominus Island, a dangerous place renowned for the precious resource Mother Earth’s Tears. Yuji and his team of tamed monsters are able to secure several cursed specimens using a combination of ice magic and unlimited Slime storage. As they continue their search, they stumble on an unexpected surprise deep within the island…