Possibly the Greatest Alchemist of All Time S01E04 - Takumi Party's First Battle!

Takumi informs Maria and Sofia that he'd like to travel, so he registers them both with the Adventurer's Guild and forms an official party. After Takumi sends some of the guild's troublemakers packing, he's approached by the Guild Master and advised to quickly rank up his party, so the three head out together on a Quest to defeat goblins.