A collection of short stories:

• Seishounen no Bigaku (A Young Man's Aesthetics) *
A womanizer named Yoshizawa one day get's hit on the back of the head, handcuffed and blindfolded. He doesn't know who the guy is but he ends up getting rapped, the guy told him that if he could figure out who he was then he'd let him go. The next day Minagawa comes up to him and Yoshizawa freaks out because he recognizes the voice as the guy who rapped him. An entangled amount of emotions occur between the two.

• Doko demo H (Sex Anywhere)
Basically involves a man whore who'd do it with anyone and anywhere even though he has someone who loves him.

• Ikemen Wanko wa Bousouchuu (A Hunky Doggy's Running Wild)
A hunky guy named Nabatame falls in love at first hit when Shinobu scolded him for trying to have sex on school grounds. Now, Nabatame will do anything to make Shinobu his.

• Shinkakei Romance (Evolutionary Romance)
Amamiya is late for the college opening ceremony and ends up running into a guy named Fujii. Later they become inseparable as friends but Fujii is always upset that Amamiya is surrounded by women. Amamiya is gay and only thinks about being with Fujii and eventually he confesses. However, Fujii has his own confession to make. And their relationship takes off form there.

English titles and Descriptions by LuffyNoTomo
(stars are one's I recommend reading)