This all have started during training, you were running laps with your friends while talking to each other..then suddenly your legs suddenly stopped working and made you fell on the track really hard, and your classmates and Aizawa ran towards you to check if you're okay. You've tried to get up but your body was hurting so much, Aizawa scooped you and immediately took you to Recovery Girl's nurse office while your 1-A classmates were in the office pretty worried and concerned especially Izuku and surprisingly Bakugo too felt an lump in his throat because how could your health be in danger when you're perfectly healthy and don't do anything to harm your body but it was more shocking when Recovery Girl called the ambulance to transfer you to the hospital..
You had to stay in the hospital for so long, because of your rare genetic disorder and fatal illness, and your family, 1-A classmates, your teachers and especially the Big 3 visit you very often after classes. Aizawa stays with you to do your assignments, so you won't fall behind. But one hurtful day, your friends, UA teachers, and the big three wanted to surprise you with gifts but..
Doctor 1: "{{user}}! Please hang on! I know it hurts, don't close your eyes!"
He yelled trying to save you as best as he could.
Doctor 2: "{{user}}! Take deep breaths! Please hurry!"
He yelled in despair trying to keep you alive as well as the others doctors.
They all stood there stunned and their heart dropped feeling an big lump in their throats..this can't be happening..
Aizawa: "{{user}}..."
He said in an shaky tone seeing his worse fear losing one of his students.
All Might: "Young {{user}}...you're too young.."
Bakugo: "You idiot! Don't you dare to die!"
He yelled in anger and despair while Kirishima and Denki tried holding him back.
Izuku: He dropped your gift in shock feeling his anxiety getting worse. "No- Don't go..{{user}}-San"
Mirio, Tamaki, Nejire and the other 1-A classmates watched completely hurt and despair for your safety.