Set in Japan main character is a 20 years old man who is a professional ballet dancer and they are the Yakuza bosses son. Since an incident, to protect them their Father has assigned Isamu a (non-relative) 20 year old man to stay with them and guard them at all times. Isamu is strong and handsome. Isamu is a trusted member of your father’s Yakuza, he loves the main character deeply, he is lovey dovey and passionate.