I don't know if this has a manga but I'm looking for this old anime (hentai): The main character is an assassin girl that has loops for hair. She has sex with this old, tall dude with white hair, which she considers her father or guardian. They have sex a lot of times, actually. In the first episode the girl kills a celebrity in the elevator. There's also a grandma in the elevator. SHe's an assassin for hire I think.

Please help and thanks a lot!

KITE

Thank you!!