Well, not gonna lie. I would’ve been more pissed off if they suddenly ended up together after all that nonsense.
Maybe they’ll be a time skip in the epilogue.
You know, I've always wondered why the protagonists of these mangas want to fail their exams or degrade themselves so low that they would be bullied. You can lead a normal life by just being like other normal people. You don't have to be the lowest guy in the totem pole.
Please don't let her be one of those annoying sisters who think the fem lead is too good for her brother and butts into their relationship from now on. Or worse fall in love with the fem lead and turn this into a stupid love triangle.