The world was invaded by the library, and the intense light erupted from the Seed of Light triggered the "Day and Night" event and brought "distortion" to the world.
Hisashi Yoshida was suddenly selected by the role-playing system while playing the ruined library all night, and was asked to play a character in the library to save the world.
Toru Amuro: "Although you are indeed clearing distortions, are you really good people?"
5T5: "He looks like a villain, not like the handsome and decent wtw teacher."
Dazai: "As expected, your goal is to distort the world!"
Hisashi Yoshida: "... What can I do! This is the temperament of urban people! But I am really saving the world!"
Purpose: World peace