Joshikousei no Koshitsuki Episode 4 , English
Seduction and sexuality seem to be in the air, water, or both at the school Joshikousei no Koshitsuki. The institute's beach volleyball coach got the surprise of his lifetime when the busty and seductive Saori Kiryuu came asking for special training to get over her embarrassment in a swimsuit. Unbeknownst to him, Saori's sister was watching the entire time, and she wants their sensei for herself. Now he must come to grips with having two very sexually charged young women in his life whilst attempting to maintain his composure as a teacher.