OVA of Diabolik Lovers included with the upcoming game Diabolik Lovers DARK FATE.

From the Guardian World, home of mages, Tiara has been sent on a mission: recover the stolen Throne of Yord, the most powerful magic artifact of all. But Tiara finds herself in a dilemma—the Throne has been taken by her former lover, and there is more to the situation than meets the eye... (Source: ANN)

DVD OVA of Witch Craft Works bundled with the eighth manga volume.