Hiro is popular with the girls at Sunao"s high school--but he"s been in love with his cousin, Saya, since childhood. Angry that Hiro would choose her over them, the jealous girls at school decide to expose a dark secret from Saya"s past... Later, it"s vacation time for Sunao, as she and Kureha arrive at a mountain lodge, where they meet star-crossed lovers who end up going to extremes to prove their affection for each other.