Synopsis
One day, suddenly, I was summoned to another world by my sister-in-law. In the first voice, "Where's the brave man? Asked, he immediately decided it was a troublesome matter and pointed to his sister-in-law without hesitation." It's this one. "" Your sister is terrible! "What's terrible about it? Who else but you is a" brave man "who has been loved by God for his appearance, clarity, and sports omnipotence?... so I'm going to be a pain in the ass for now. The lazy sister-in-law of a totally indispensable supergirl goes on a backward cross-world expedition.
(* Note: The protagonist, almost invincible from the beginning. ）
