https://www.cmoa.jp/title/263758/

People have always avoided Waka because she's the daughter of a crime family. Dreaming of a life where she has friends and even a boyfriend, Waka leaves home and starts living on her own. She's excited about her new life as a regular office worker ― until Jin, who has been her bodyguard since Waka was a little girl, shows up and threatens to take her home... Jin ignores her attempts to resist him and makes a proposition to start a relationship. Waka goes along with it, figuring it's just an excuse to take her home. But, with heat in his voice, he then gently touches her body with his big hands... as if there's no one else he wants... She thought they were only pretending to be lovers... Is this the start of a lovey-dovey life with a possessive gangster who knows everything about her, a life sweeter than living with a real boyfriend!?