I Don't Want to Choose Between Heaven and Hell!

Ben is a student taking the college entrance examination and experiencing a strange reincarnation event. Witnessing his teacher's promotion to a "demon" and being trapped in a battle where the world is about to collapse. After coming into contact with various people and organizations, the inner world where gods and demons erode each other slowly unfolds in front of him. While taking care of the ordinary world and saving the "other world", a legendary mission of his begins!