Magnum Lily

Magnum Lily (マグナムリリィ) is a manga series written and illustrated by Kube Toshihisa. It is serialized in Magazine Pocket.

Plot
A 15-year-old high school girl named Yuri meets a 19-year-old female boxer named Windy at a funfair, and she way to a women's boxing match and she see Windy on the boxing ring when she wants to become a boxer in order to fight her in the women's boxing match at 12 rounds and she end up going to a boxing gym.