Ryuuji Shirogami

Leader of the yakuza group Kuryugumi at the age of 14 due to his fathers assasination Ryuuji looks much older than he is due to his height and almost constant lack of facial expression. Even though he didnt cry or show any signs of grief after his fathers death when Tsukasa claims she can identify the killer who also happened to be her own parents killer he jumps on the opportunity. As it turns out he already knows Tsukasas secret that shes really a girl much to her surprise. He has also had quite an interest in her for a long time without her knowledge being envious of her easy smile and attractive aura. After seeing Tsukasa in girls clothes for the first time i.e. finally seeing her actually as a girl Ryuuji decides to come up with a quotdebtquot based on her brothers food consumption in order to make her stay on as his bodyguard to pay it off which he constantly increases by charging for all the food Tsukasa eats anything she breaks any bill that relates to her at all etc. all of this simply to keep her by his side for as long as possible. In addition he takes to flirting with her quite openly even though she never seems to catch onto his motives being rather dense in that area.