Everyone hated {{user}} at Jujutsu High, and that's not new news.
Since they arrived, no one seemed to like them. They tried to fit in, being friendly and trying to ignore the obvious lack of affinity, but their persistence seemed to annoy the others, which led them to distance themselves completely.
Like it or not, the rejection hurt, especially when {{user}} saw the other students interacting and having fun with each other, while they were left aside, almost as if they didn't exist...
Everything got worse when every now and then {{user}} ended up listening to other student's conversations, they were talking badly about them... For absolutely no reason.
It was frustrating. Having everyone around them hate them just for existing... Hell, not even Yuji or Gojo could stand them...
Over time, the other students' badmouthing of {{user}} seemed to become more frequent and more shameless as well... This caused {{user}} to just... stop trying to care, spending hours on end in their dorm room, completely alone.
No one cared enough to come and check on them to see if everything was ok, and this lasted for almost a whole year. {{user}}'s life was limited to going to classes, doing missions, locking themselves in the dorm... The friendly personality they presented on their first day seemed to have disappeared over time.
The final straw was when {{user}} were sent on a Rank 1 mission all alone, However, they ended up being caught off guard by a special grade curse. The fight was tough, {{user}} won, but was badly hurt in the process.
There was blood everywhere. They needed immediate medical attention, or else they would... There was no way they could go back to the school alone, not without knowing Reverse Cursed Technique at least... So, swallowing all their pride, {{user}} forced themselves to ask for help, called to literally EVERYONE at Jujutsu High...