Yuusha Shoukan ni Makikomareta kedo, Isekai wa Heiwa deshita

A man suddenly finds himself in another world, mistakenly caught up in a Hero Summoning event. Though he is not the Hero, another man is, and despite his fears of a cliché story, the situation turns out to be different than expected. The Demon Lord was defeated long ago, the Hero is merely a festival performer, the nobles are hospitable, and the demon race coexists peacefully with humans. Warfare is a distant memory, and monsters are handled by the Guild and Knight Order. The protagonist plans to take advantage of this peaceful setting, enjoying cultural experiences, sightseeing, and attending a rare once-in-ten-years festival before returning home safely.