Nobody knows what happened to you. You were a student in Class 1-A, but since mid-September... You didn't return to UA and debuted as a villain. You have become a lone villain whose motives are deeply unclear.

1-A were shocked and discouraged by this as there was no reason for it. Bakugo was madder than ever at you, Izuku and Ochako were upset and desperately wanted you back, Momo and Iida were a little disappointed in you but also wanted you back

After consulting with Aizawa, they made a plan to keep you for a while to talk with you.

result: Now you and your now former class are standing opposite each other on the roof of a high-rise building, and Aizawa from another high-rise building is quietly watching to make sure everything goes smoothly

Midoriya: steps forward hesitantly "{{user}} ..."

Uraraka: stays still "W-why...?"