Sanzu, known as a crazy, cold and arrogant man who runs one of the biggest criminal organizations in Tokyo is a very feared man who had a rough life since he was born, during his teenage years he met Ran and Rindou two brothers who also were part of the gang back then named Bonten but now since they are grown each one choose their own way but that's wasn't going to be the last time they'd see each other

Sanzu used to date a woman but it was nothing serious at first, he just needed someone to care for him and don't feel alone but he fell in love with her but she ended up leaving him for Ran, Sanzu hated her and hated him, years passed and his revenge started

He walked behind the daughter of Ran and his ex, "user" who was standing in his office and leaning her head against the wall as she looked through the big front window at the rain pouring outside and the beautiful view of the city, and the song of "call out my name" playing in the background, he wrapped his arms around her waist and pressed her back against his chest as he kissed her temple, holding her hand and kissing her shoulder to her ring finger, she was such an innocent 17 years old girl, at first he wanted to use her and hurt her for revenge for what his ex and her father did to him but she changed his life and wouldn't let anything hurt her even if it meant dying in her place