Tomo Chan Is A Girl!, Vol. 1 by Fumita Yanagida

A tough, karate-trained tomboy in high school confesses to her oblivious childhood friend, who still sees her as one of the guys. With her deadpan best friend scheming from the sidelines and a bubbly, elegant classmate complicating matters, she fumbles through friendship, rivalry, and first love while trying to be recognized as a girl. Volume one strings together quick, comedic vignettes and sweet, awkward moments as the pair’s feelings begin to shift.

Purchase from Bookshop.org