Jibun Katte.
Whenever Tomo gets a girlfriend, his selfish childhood friend Hideaki comes between them. Now that Tomo has a new girlfriend, he's on the lookout, but nothing happens. Thinking the lack of intervention strange, Tomo then discovers that Hideaki has a new lover a man (Tomo just misinterpreted the scenario)! Maybe he was just showing off, but Tomo can't forget how gentle his friend looked when he was worrying about love. A straight guy easily moved by kindness and affection × an egotistical hottie with a strong desire to monopolize. Can they go back to the time when they thought they knew everything? Romance blossoms between friends.
Hana Ni Kuchizuke
Ikkun's friend Hana forces him to have sex and then disappears. Years later, Hana calls Ikkun and the two hang out. Ikkun tells Hana that his habit of running away if too much for him. Hana leaves and the two don't talk for awhile. Ikkun decides to visit Hana's workplace and gets angry that Hana is exposing his body to others. Hana chases after Ikkun and the two make up. Hana quits his job, lives with Ikkun, and are super lovey-dovey. Ikkun also meets Tsubaki, Hana's previous teacher. Cute but only re-read for smuuuut.
Baka ni Koi toka Shoujiki Muri ja ne?
Funny and smutty story about Nanase who is in a sex-friend relationship with Hina who is a complete but adorable idiot. When Eno comes to school to rock the relationship, Nanase has to try to win Hina back. Lo and behold it's Hina who realizes his love for Nanase and gets him back :)
1/365 no Koibito
One-sided love of a gay friend who confessed. The straight guy doesn't love him but agrees to meet with him once a year.
Katakoi Opera
Akuta falls in love easily and will always fall for others. He has two childhood friends who are known for being dangerous twins, Ao and the girl (Beni). Ao secretly harbors feelings for Akuta (for 10 years) and will sneakily try to destroy all of Akuta's potential lovers. The two eventually hook up with the twin sister's help. Interesting story.
Yagi to Ookami no Hatsujou Jijou
Two childhood friends are assigned to Earth to learn about it. Akira is a goat and Ookami is a wolf. Ookami doesn't understand what happened between him and Akira to make them current enemies. Akira just sucked Ookami off in the equipment shed where Ookami notices again that Akira's eye change shape. The teacher is also suspicious and he turns out to be one of them (a goat). Overall, the storyline ended the tension between the two quite quickly so I would just read this for the SMUT. That's it really.
Bokura ga Koi wo Ushinau Riyuu