Master of Martial Hearts

is a Japanese multimedia project created by a collaboration of ARMs and Shochiku and a few other companies. The OVA series was produced by ARMs for 5 episodes from October 29, 2008 to February 25, 2009, and licensed by Funimation in the US.

Plot
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.