On his usual way to home Mikado Tsuchio fell into a hole that suddenly opened on the ground. Just like that, Tsuchio falls in a different world, as luck befall onto him, he meet with a dragon and get hugged by it. Tsuchio decided just like that to live in the other world, the reason for his quick decision: a boy dream is to make a harem. So he ditch the school and then acquired a skill to caress animals that have been tempered by caressing many cat and dog.