Mugi and Hanabi are the perfect high school couple...but their relationship is built on a single shared secret: They're each in love with someone else. (Source: Yen Press) Included one-shots: Volume 1: Nyan Nyan Prelude Volume 2: Nyan Nyan Serenade Volume 3: Nyan Nyan Oratorio Volume 4: Nyan Nyan Cantata Volume 5: Nyan Nyan Andante Volume 2 contains the side story "Little Little Princess" (Little Little Princess).