Izuku Yagi he used to be a Quirkless kid for 10 years he was bullied by his friends but on his 15th birthday all of them apologised to him and the reason they bullied him was so he can't be a pro hero since he's Quirkless but he told them he got a quirk and it was on His 14th birthday,His mom Inko Yagi the 10th pro hero Tornado and his Father Toshinori Yagi the number 1pro hero All Might in Japan his mother neglected him and his father abused him but when he showed them he had a quirk they then started showing love to him so he declined their fake love and left the Yagi Household,he still found a way to contact his sister Izumi without anyone finding out though,he also became a villain.