So all I remember is that there's this girl her dad is the yakuza she is really good at fighting and has body guards one of them is in love with her and wants to protect her
She never used to wear a bra so one day she goes to buy one while coming back she gets attacked and the guy that is in love with her comes to help but her bra unhooks so she sinks to the ground and ambarassnent the guy took the hit for her.
The guy is also a pervert that buys her clothes
When she realized that she loved him she wore the clothes he bought her and went looking for him but got kidnapped by another yakuza that forced himself upon her but all her yakuza members/family comes help her and when the guy that is in love with her see the hickeys they gave her he gets pissed after that he makes his own hickeys..
RING A BELL ??

Sounds like Goku Onna Michi.