Crybaby Magician's Life in Another World After Clearing the Game

Ray, a magician summoned from Japan to another world. I defeated the heroes and the demon king using cheat magic, and this time we had a happy ending! It's an ostensible story. The crybaby magician didn't really want to fight, and he was lonely. The story of a crybaby magician who is trapped in the tower and worries in a peaceful different world.