The first time I was a brave man, the second time I was a demon king, the third time I transmigrated to another world (2) AlphaPolis

Product description ※Please note that product information is not in full comprehensive meaning because of the machine translation.

By chance, Rave was scouted by the student council, which is in charge of solving difficult cases. One day, he was invited by Sylphy, the president of the student council, and received a request from the floating city. To solve the mystery that the water of the city was poisoned, the couple set out to explore the sea bottom. However, they were suddenly attacked by a giant beast that appeared, and they fell into a crisis of absolute death. Rave completely releases the power of the brave man and the Satan King to fight!