Yamada-kun and the Seven Witches, Volume One collects the first five issues (of 243!) of Miki Yoshikawa’s eponymous manga series. The series ran from 2012 to 2017. The English translation was released in 2015.
Ryu Yamada is an outcast at school, a delinquent whose marks are as unimpressive as his attendance record. He regards Urara Shiraishi as exactly the sort of overachieving student he loathes, so he makes a point of cutting in front on her while ascending the school stairs.
One tumble down the stairs later and he is a delinquent transformed.