From Hoshikuzuu Scans and Starry Sky Scans:
Fumiya and Kengo are childhood friends with a nine-year age gap. Honor student Kengo is always trailing after Fumiya. Even after he’s become an adult, to Fumiya, he is still like a precious little brother. But ever since he became an exam student, Kengo’s been giving Fumiya more heated stares. In addition to that, he declared, “If I pass my tests, I get a kiss from you”!? Other stories include another two stories about hidden love.