As was being implied he failed his middle school exams.
Knowing him he may have drifted away from his two buddies out of shame from failing to get into the same school. Maybe they'd welcome him back if he made the effort.
so he felt ashamed that he didn't pass the entrance exam with his buds..him that has quite achievement fails and falls to depression resulting to change of his behavior
@adt141 Not necessarily, without a proper place to meet up with people, drifting away from each other becomes extremely easy, and it reaches a point where calling out to them would be awkward and scary REAL QUICK, I used to have three friends in elementary school, when we passed to middle school one of them got into a different class and we completely stopped talking, the other one got held back and we stopped talking, and the last one also changed classes when we entered high school, i still feel guilty because i feel like i treated him like shit the last year we were on the same class, and that's the story of how i lost the only friends i ever had