Battle 3: Three Sisters, Sworn Enemies
Aya proves she can hold her own in a poolside battle with a naughty policewoman. Later, she takes on three sexy sisters simultaneously before meeting the mystery man behind this deadly tournament. Source: crunchyroll
Aired 20/12/2008EP 3 - Battle 3: Three Sisters, Sworn Enemies

2008
Master of Martial Hearts
The story centers on the Platonic Heart, a jewel that — according to an old urban legend — can grant any wish when collected. Only a chosen few are allowed to compete in the Platonic Heart hunt, and high school junior Aya Iseshima is one of 11 girls and women who are taking part.