The best ecchi anime i ever seen...
this story is about issei , the pervert high school student who want to become harem king..
But one day, he got killed by the fallen angel and then he saved by rias gremory, his sempai on high school..
His life saved but he has to become devil and now his sempai become his master. Many things has happen after he become devil...how can he survive in the world that he even don't know..
