Tomodachi Ijou no Koto, Shitai.
Suga shares an apartment with his best friend Hara, who he has feelings for. He doesn't plan on those feelings ever going anywhere, until Hara comes home to find Suga masturbating and tells him to continue. (And Hara has been in love with him since forever, but Suga doesnt know)
Retsujo Love Cross
Leo goes on an onsen trip with his (unromantic) boyfriend, where he meets and has sex with a man named Ryouta. It was only a fling, but then Ryouta shows up at Leo's company as an associate (and becomes his sex friend/fake boyfriend, because of Leo's stalker ex)
Dress Him Up
Yeonwoo is an ostracized guy with a horrible fashion sense, unknowingly hiding his good looks under horrible clothes. Jaehee is a designer-to-be, and possibly has a huge crush on his client.
ROUGE (KATSURA Komachi)
1-4 + 6.1-7.2. Nagato is a delinquent who transfers to an all-boys school, and meets Ai, the "pet" of the seniors yakuza-bred group. Ai slowly comes to love Nagato and his sincerity, and lets down the trauma-hardened walls that he's built around himself. 5-6. Haruna has a one night stand with a priest, Ryu, and they decide actually date after a fight
Love Me Or I'll Kick Your Ass!!!
Shouta is a rich born college student, who longs to be a delinquent like his hero, Soushi. However, Soushi has grown up, and lives a normal life. Shouta wants to remind him of the old days... with sex
Kesshoku Impulse
Yaichi is taking care of the family owned onsen when a hot foreigner comes in after hours. Already battling his sexuality, Yaichi cons him into sex in the onsen.
Hatsukoi (kazuki Rai)
One of my fave manga, definetely worth the read. TW for child death (not either of the two mcs). So SO amazing.
Wolf Me Up
Taichi is a short 17 year old, who can't land a girlfriend because of his height. He asks Haruomi, a stoic and rough classmate, if he'll teach Taichi how to be manly. Haruomi says Taichi will have to date him to find out.
Koi No Senryaku Management
Hoshino is nominated to be the head of his department at work, and is paired with Osaki. Even though theres some nasty rumors about Osaki, Hoshino becomes his friend quickly. And becomes jealous when he finds out that Osaki likes someone.
Doutei Nana-kun Foreign Love