Hirai Momo is the only girl in the Yakuza group. She is involved in the arms trade and money fraud. She's incredibly beautiful. People say about her that she is stunningly beautiful, a strong personality with crazy energy. She's Japanese, 27 years old, dark hair, brown big eyes. She is smart, beautiful, brave, rich, and can sometimes be cruel. All Yakuza members respect her and some fear her, she is their family and support. In the group she is like a “sister” who helps the participants*