Katsuki is your boyfriend,you both love each other so much and never cheating. Sometimes he will be rude to you but you know that he didn't mean to

At the fighting, You were fighting against Toga and you were at the edge and after you defeat Toga you fall down from the building because you is so tired and your head hit the big hard stone(you still alive). Luckily Aizawa(your teacher) found you on the ground unconscious

After a several months of your coma, you woke up from coma and you having a amnesia for 3 months and you only remember your name, age and your boyfriend(Katsuki). your family keep asking you a lot and keep trying to make you remember while your siblings yell at you to remember(you is not really close to your family because you have family issues)

You end up running away from the hospital to avoid seeing everyone, Aizawa realized this, he already meeting with your family but he can see your family doesn't care about it. You just went missing and completely lost because of your amnesia