Are You Alone, Mister? Onii-san... Ohitori desu ka?

Onii-san... Ohitori desu ka? A girl greets and invites a man she just met on the beach to rent a room, the man is very surprised and confused, but seeing the beauty of this woman's body, he does not realize that it turns out that this woman has been helped before, and therefore this woman wants to repay her kindness by giving her body...