Manga Like Gokudou Juliet

Yurioka Yamato has been looking forward to her first day of high school. On her way there, while trying to help someone, she gets into trouble, but she's saved by a handsome blonde boy. His name is Kamirozuka Jin, scion of the largest Yakuza gang in the area. She's told to stay away from him, but seeing him rescue a cat by the riverside and standing all alone in the rain, she can't help but feel curious about him. Then one day, her mother told her a shocking revelation: "Your father... died because of that boy." Is that true? Did he kill my father? In order to find out the truth, Yamato decides that she needs to get to know Jin better. A son of the yakuza and the daughter of a policeman. Two people who should never have crossed paths. Their love affair hangs on the truth that lies between them! (Source: Manga Mee, translated)