Chikyuu no Ou-sama

Sato Hinata's childhood friend, Torihiko Uchida, has a good face and women kept coming to him one after another. Eventually, even a demon girl came by, and the demon's partner was awakened on the condition that he receive her magical power. However, the key magical power is taken by a pigeon, and the two demons target Hinata's life in order to get their hands on Torihiko. (-DeepL)