Wall B*tt App

Wall B*tt App, known as 壁尻アプリ in Japanese, follows the story of high school student Kabejiri Yuki who discovers a mysterious app on his smartphone. Intrigued, Yuki activates the app only to have a surprising encounter with a wall buttocks in his room as per the app's instructions. Despite the app's ominous hints, Yuki proceeds with caution, leading to unforeseen consequences in this intriguing blend of adult, ecchi, harem, mature, mystery, romance, school life, seinen, and supernatural genres with tags like male protagonist, modern-day setting, and R-18 content.