Back to the Years When My Dad Was a Top Student

Chu An has always suspected he isn’t really his dads’ child. Otherwise, how come other people can casually come in first, while he needed his dads nagging him to study every day just to pass the high school entrance exam? One day, he transmigrates back to the time when his dads were in high school and becomes a pitiful kid with nowhere to go. But can someone explain why his cold, utterly unfeeling genius dad is in the middle of a brawl? And why is his soft, helpless little dad grinning from ear to ear as he cheers from the sidelines and occasionally kicks someone? Are these really my dads?