Asahinagu

Asahinagu (あさひなぐ) is a seinen sports manga by Ai Kozaki. It is published by Shogakukan, and serialized in Big Comic Spirits. In 2017, it was adapted into a live-action movie.

Plot
When Asahi Toujima enters high school, she wants to reinvent herself and become a much cooler person. However, she discovers that changing herself is much harder than she thought it'd be. But when she and two other first-year girls are strong-armed into joining the school's naginata(a traditional sport similar to kendo) club, she might discover that it's just the thing to help her.