[COMPLETE + OVA] C³ Cube×Cursed×Curious

The story begins with high-school student Yachi Haruaki receiving a mysterious package, a super-heavy black cube from his father overseas. That night, Haruaki wakes to a suspicious noise in the kitchen and discovers a stark-naked female thieving rice crackers. The girl Fia, or “Fear”, is the first of several surprises that Haruaki is to receive.