Cosmo Teacher CAO-2 / Ooh, Scary! Voodoo Doll "Cosmo Teacher CAO-2": After learning of a mining operation on a planet with a secret from when they were in elementary school, Oyuki meets with Lum, Benten, and Ran about their revenge attempts on their old robotic teacher, CAO-2. "Ooh, Scary! Voodoo Doll": Ryouko makes a vooodoo doll of Shutarō and entrusts it to Ataru, which he attempts to reclaim without Ataru learning the truth.