She's in Her 30s but Weak to Sex!? Screw Her Hard and She Turns into a Slut!

When landlord of a rundown apartment building, Chiaki Kusakabe, returns to his room after finishing cleaning for the day, he is shocked to find a gigantic water leak coming from the second floor! His upstairs neighbor, a troublemaker named Nao, is the only possible culprit, and he dashes to her room