Onechanbara: Bikini Samurai Squad(2008)

お姉チャンバラ

In the year 20xx, scientifically created zombies roam the world in record numbers. Despite this, Aya is determined to track down her father's killer, a person who was once close to her. With sword in hand and wearing nothing but her trademark bikini and cowboy hat, she sets off to settle the score.