My Isekai Life 02: I Gained a Second Character Class and Became the Strongest Sage in the World! (manga)
Thanks to his little slimy buddies, Yuji now has immeasurable magic at his fingertips as the world’s strongest Sage! Intent on making the most out of the curious situation he finds himself in, Yuji decides to join a guild. To do so, he must first sit the guild’s membership exam. But neither the guild’s examiners nor the other examinees are prepared for Yuji…and the sheer power he possesses threatens to swallow them all!!