Asobi ni Iku yo! OVA

It is already summer and the Catians decide to study the games on Earth. To make things more interesting, Manami suggests that each participant should wage a precious item and whenever a person wins a round they may choose one of these items as a reward. While Aoi and Manami covet a special item waged by Kio, their priorities change when they are risking to let a DVD with embarrassing scenes of both go in the wrong hands.