KonoSuba: God's Blessing on This Wonderful World! 2: God's blessing on this wonderful Art!
Kazuma meets a novice adventurer called Ran who claims to be Kazuma's fan. A quest is proposed to Kazuma and his party in front of Ran, so he accepts the quest to look good in front of his fan; after some convincing, they all go to fight the metal golem. (Source: Wikipedia)