She-Beasts, Warm Bodies

Original title: しなやかな獣たち

“A girl's hot lips break the yakuza rules... The problem work of Mari Tanaka, who was called "Idol of the Police Department"!”

A low level wannabe yakuza is given a job of collecting drugs stolen from a doctors office. But at the collection point he meets up with the doctors daughter instead of the nurse who was being blackmailed. He falls for her and is torn between protecting her when the mob comes after her and his loyalty to the gang.