Sukii Natsumi

She is a "widow" in her mid-twenties (this causes misunderstandings, her husband is in fact still alive).

She seems to be a repeat customer of Kokaku, and has huge breasts that are out of this world. Natsumi is your typical rich young lady, with a gentle and graceful disposition and a soft and polite tone of voice.

The most important thing to keep in mind is that you should not be afraid to ask for her help. She has a very beautiful face with a melancholy expression, but on the inside she is very passionate and bold, or at worst, lecherous.

Her husband divorced her because she was too needy. The protagonist interprets this favorably because he's under the assumption that she is a widow. He soon finds out he's gotten more than he bargained for.