「俺と、付き合っちゃう?」別れ話でもめていた隣のクラスの烏童と付き合うことになった三城。気まぐれで始めた「恋人ごっこ」のはずなのに、烏童の隣は居心地よくて…。
セックスも彼の手管に翻弄され、快感に震えていることしかできなかった。優しい愛撫、甘い熱――俺の体はどうしちまったんだ。…ヤバイ、こんなの俺じゃない。
硬派彼氏×チャラ系男子、男子高生のふしだらな純愛。

A collection of stories:

1-3. 誤算のハート [Gosan no Heart] / The Heart of Miscalculation
"Why don't you date me?" And that's how Miki started going out with Udou, from next door's classroom, who was fighting with his ex-girlfriend. It was because of a whim, just a "game". But being with Udou, he started getting comfortable? During the sex, Udou took control of him with tricks, making him tremble in pleasure. Tender caresses, sweet passion? What happened to my body? Damn, I'm not like this. A traditional boyfriend, and a boy who likes to flirt. A story of pure and immoral love between high school students.

4. Last Summer Blues
A bittersweet story about two boys who love baseball.

5. A Vulnerable Afternoon
What happend if Oomura breaks his glasses? Maybe finally he will be able to see good side of Tamachi, his workmate?

extra The World Revolves Around You

bonus - related to: Sekai wa Kimi de Mawatteru