C³ is a mixture of mystery, splatter, harem, comedy, fanservice, romance and some contain more, it should allow everyone on the show to find at least a little pleasure when it denied perhaps not really the absolute elite of his own anime list is.
The opening theme song for the 8 first episodes is "Endless Story" performed by Yukari Tamura and the ending theme song is "Hana" (Snow Flower) performed by Eri Kitamura. From episode 9 onwards, the opening theme is "Shirushi" (Sign) by Eri Kitamura and the ending theme is "Sympathy of Love" by Yukari Tamura.