Manga by author Mizuhara Zakuro - Status ongoing

.Azuma Sakuragi is deeply in love... with his twin brother, Miyabi! Miyabi is a pure genius at archery, but pretty much useless at everything else. You would think Azuma would be fed up with taking care of him all the time, but instead, he's happy to spend as much time with Miyabi as he can... until one day, the A.C. in Miyabi's room breaks down, and Miyabi has to sleep in Azuma's room... and share his bed! Can Azuma keep himself from secretly touching his brother?

From Hoshikuzuu Scans:Within the two seconds of us locking eyes, I see the invite and follow suit. There are many stories of one-night stands, but doing it in the bathroom at the station to my workplace? That's a new one. And even when I've got a policy to never do the same guy twice, but I just couldn't forget him. Then I meet him again exactly a week later, same place, same time. And we do it in the bathroom again!!