Koi wa Ina Mono Myouna Mono
From Cidsa’s Scanlations:
On the first day of school, Tamura Masafumi sees Seiwa Narumi and immediately passes out.
It is discovered that when Tamura was a kid he had psychic dreams and could predict many events. He thought they had all disappeared but at the beginning of Junior High he has another one, and it shows him having sex with another man!
Tamura refuses to become gay and swears to prevent it. When he sees Seiwa, he realizes that this is the other man in his (now frequent) dreams!
So Tamura treats Seiwa quite badly in hopes that he will leave him alone, however, Seiwa has other plans. What will happen between these two?
There are several side stories in the anthology Aruji no Oose no Mama ni.