All of the stories are somewhat too fast-paced, some more than others. And all of them are just too vague in their endings, except the last one maybe, kind of.
Summer vacation has started and Yoshiyuki and his cousin, Takaharu are being tutored by Kurushima, who works for Yoshiyuki's brother. Though reluctant at first about having a home tutor, Yoshiyuki starts developing an attraction towards Kurushima. However, there's more to Kurushima than meets the eye...