Our protagonist dies by mistake and is reincarnated as tokisaki kurumi, the goddess who reincarnates him gives him the option to be transported to different worlds as long as he fulfills a task in the world he is currently in.

Warning
English is not my main language, so I would appreciate any comments on spelling errors.
This is a fanfic so most of the characters are not created by me and some parts may be different from the original product.