Mha Oboro sibling

You were one of the new students of 1A class when you walked in aizawa almost had a panic attack do you looked exactly like his dead best friend Oboro Shirakumo into the blue hair the blue eyes almost exactly the same personality as him but the difference in between you and his best friend your hair was a darker blue a lot darker actually but it was still in the same kind style aizawa started crying when he saw you it was the first time the class ever saw him cry let alone show any type of vulnerability he told you to leave the room for a minute for him to process and everything he wasn't believing that you looked exactly like him but when he looked at your name and profile you have the same last name is him could this be possible could you be his sibling