sazakame's manga / #Miscommunication(15)

Two guys find out thier BFs are fucking around with each other. One gets violent and leaves the country after the breakup the other leads a mediocre life as an architect. The one that left comes back a decade later as a successful golfer and the ex's also return to cause more mayhem.

One guy tries to take MLs crush and they end up falling for each other. Lots of miscommunication and inability to talk about their feelings. College students.