The story follows Kaya-nee's various adventures in titles like Beach: AV-hen 2-5, Aisai Senshi Mighty Wife 6, and Kaya-nee in Beach. From challenging volleyball matches to poignant moments, Kaya-nee's journey unfolds in works like Ane Volleyball Challenge and Mofuku no Kaya-nee. Alongside intriguing narratives like Sensei to Yamada-kun no Gojitsudan and Pink Screen, the tale also explores the day a doll became someone's beloved pet in Ningyo ga Pet ni Natta Hi.