Mazemonogatari 

A series of crossover stories between characters from Monogatari and characters from Nisio's other works. Originally, 4 crossover short stories were released during the theatrical screenings of each Kizumonogatari movie. The stories were bundled up into Mazemonogatari, and included 3 unreleased stories. Includes 15 stories: Kyouko Balance Jun Build Nomi Rule Mayumi Red Eye Kuroneko Bed Risuka Blood Hitei Clear Iori Fugue Shiogi Ranger Akari Triple Rizumu Rock 'N' Mikoko Community Kuu Invisible Rai Roulette Magakoro Finisher