My Isekai Life: I Gained a Second Character Class and Became the Strongest Sage in the World!, Vol. 04

With the town's recent monster problem dealt with, the Adventurers' Guild finds itself face-to-face with a much more deadly issue: a massive dragon, more powerful than anything Yuji has encountered thus far! With his strongest spell, "Hellfire of Decimation," barely making a dent, Yuji will need to figure out a way to take down the ferocious beast before it roasts him to a crisp!