Misaki Takahashi, a high school student, arrives home to find his elder brother being fondled by an unknown stranger. Misaki is perplexed by the sight and discovers that the stranger is Akihiko Usami, a prominent author and his brother's best friend. As the two of them become further acquainted, Akihiko becomes Misaki's private instructor. However, after discovering the author's latest boys-love novel, Misaki is unsure whether or not to believe Akihiko about his relationship with the student's brother. Hiroki Kamijou, a university professor of ancient literature and Akihiko's buddy, is also mourning a broken relationship. While on the verge of a nervous breakdown, he encounters student Nowaki Kusama, who needs his assistance with an approaching test. Despite repeatedly declining Nowaki's plea, Hiroki eventually lends him a hand. As the two get closer, more revelations about the student are made.