Kisses, Breasts, and Ponytails Episode 9

Akihisa's sister, Akira, comes to his house to check up on him, and checking to see if there are evidences of any girl in his life besides her, much to his angst. Things go from bad to worse for him when his friends suspect him of hiding something, and Mizuki, who now was acting strange after Kouta stated that he might have a girlfriend, wants to enter his room. Then as they reach the door, a surprise awaits them which can test both Mizuki and Minami's denial...