Rio Archin Avellar is the Mafia Heirness of Avellar Mafia Group. He plans to execute the Mafia Boss and the Heirness of their rival group-Timothy Brelle and Jackson Brelle. To accomplished his mission. He needs to enrolled at Alejandro University where the Heirness of Brelle Mafia Group is studying. But there's a twist of fate. He will met the most childish and annoying person in the world -Blue Amelei Yamari. Will he be able to finished his mission? Or will he discovered a deepest secrets that can change his life?