Maya, Kurusu and Chelsea get along remarkably well once they share a goal: payback against Guardian Hearts for the misery it has caused them. They believe Guardian Hearts tends to show up whenever Kazuya is getting along with a girl, so they plan to leave a girl named Hina alone with him and wait for their target to appear. What they do not know is that Hina is Guardian Hearts herself. Across six OVA episodes, this is a comedy with romance and ecchi elements, built on a revenge scheme whose bait is the very target the plotters are after.