Meet Kenta. Kenta has the unfortunate reputation for being the biggest loser in his entire school. He is bullied by the popular kids at school and he is tortured by his evil younger sister Yumi at home. Everything changes when Kenta receives a strange chain letter in his email. Inside the chain letter is instructions for summoning a succubus! Kenta, against his better judgment, follows the directions on the letter and accidentally summons a succubus from the underworld! It's going to be one hell of a ride for Kenta as an angel, and later a fox demon invade his life. Can this once proud loser keep his manhood intact with these three fighting over him?