Third son of a kuga englemorate company is orphanage kids and now qhen his father is close to death he will become future ceo. He made a promuse with his orphanage friend to made a world pleace where nobody would be discriminate. Now in his afolthood they met again but kuga dont remember about him and their promise. Touga is a special new verse spice called ENIGMA. he made kuga omega from alpha. They have a kids together and touga become kuga bodyguard.
Kanraku Alpha ~Enigma~ 4 verse