Kick no Onee-san

Akiyama's life is forever changed when he catches a glimpse of Hana on a television interview, a talented kickboxer whose determination and skill captivate him. He becomes a devoted fan, attending all three of her matches, but his world is turned upside down when she suddenly retires from competition. Chasing a chance encounter on the street, Akiyama discovers a woman with a complex persona, driven by an unyielding passion to become the world champion, and a depth that surprises him beyond his initial infatuation.