Isekai Shoukan wa Nidome desu
English name: Summoned to Another World for a Second Time
Genres: Adventure, Comedy, Fantasy, Romance
Type: TV, Episodes: 12
Aired: Apr 9, 2023 to Jun 25, 2023
Studio: Studio Elle
Source: Light novel
Rating: PG-13 - Teens 13 or older
Synopsis:
There was once a man who was summoned to another world, and saved it. Of course, he became too popular there, and turned into an isekai-normie. However, that man fell into a "trap" and was forcibly returned to his original world. Moreover, he had to start over as a baby!

This is the story of the way-too-fantastic ex-hero who lived as a gloomy high-schooler, as he gets summoned once again to that same other world in a very unexpected development! 

(Source: Coolmic, edited)