An ordinary, decent guy gets a transformation card System. With a transformation card, he can turn into the character depicted on it.
This is a "heartwarming" story about a protagonist who can transform into anime characters, going around saving the world and returning to reality to rest whenever he gets tired.
(Author type: intermittently brain-fried. I have occasional episodes of poisoning my readers, and the next day I may want to bite my previous self to death. Reading requires a certain tolerance for poison.)
(Special notice: The protagonist is attracted to women, and the author has no intention of marrying into a family. Any illusions to the contrary are simply elders' concern for younger people and pure friendship between friends.
If you have any feedback on things that could be improved, Yaogui would be very happy to make corrections. Feel free to tell me where the poison is, where the characters' intelligence goes offline, and so on.)