Isekai de Skill wo Kaitai shitara Cheat na Yome ga Zoushoku Shimashita: Gainen Kousa no Structure

On his way home, the usual bus Souma Nagi takes got transported to another world. And like in any other isekai,
they're treated as heroes chosen to defeat the demon king.

Instead of going with the usual crap, he chose to survive to his new world until he gets back.

Based on a web novel of the same long name.