Ryuuji Shirogami

Leader of the yakuza group Kuryugumi at the age of 14 due to his father's assasination, Ryuuji looks much older than he is (due to his height and almost constant lack of facial expression). Even though he didn't cry or show any signs of grief after his father's 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 Tsukasa's secret (that she's really a girl), much to her surprise. He has also had quite…