My Isekai Life: I Gained a Second Character Class and Became the Strongest Sage in the World! - S01

Yuuji Sano worked himself to death in a ruthless corporate job, only to wake up in a fantasy world resembling a game. Hoping for a quiet life, he discovers he’s been labeled a "Monster Tamer"-the lowest rank of adventurer. But by taming nearby slimes, he unlocks magical abilities and becomes a "Sage," a secondary class that amplifies his potential. Despite his newfound power, Yuuji hesitates to use it fully, haunted by his past. Yet when threats emerge that could wipe out his new world, he may have no choice but to step forward and fight.