A collection of diverse stories unfolds in School Caste as characters navigate their way through intricate relationships and challenges. From after-school library encounters in Houkago Toshokan to the melodious journey of Piano Lesson, each tale delves into themes of love, self-discovery, and unexpected twists. Dojikko na Kanojo and Seishi Kansatsu offer unique perspectives on personal quirks and observations, while Hitorigurashi, Ojamashimasu and Onna Spy★Dangai Zeppeki!! take readers on unexpected adventures filled with humor and suspense.