Episode Title:
The Girlfriends' Challenge.
Episode Description:
Saki's mother, who does not know about Nagisa, is concerned Saki and Naoya are not having sex. Saki realizes due to Naoya's easily flustered personality and determination to treat his girlfriends fairly, he might never have sex with either of them. She attempts to seduce him as a bunny girl, but he insists on their no sex rule and when he does touch her breasts, Saki panics and punches him, but is happy she aroused him. Nagisa becomes suspicious when she finds the bunny costume in the laundry and confronts Naoya. Naoya insists nothing happened so Nagisa comes to believe he has a costume fetish and dresses as a sexy maid. Naoya is aroused but still sticks to the rule...
