Fukubiki! Triangle: Miharu After

Synopsis

Miharu Shinonome has a flawless physique and considerable experience in intimate encounters, often taking the lead in her dynamic with her boyfriend, Ushio Irifune. But a severe accident lands her in the hospital, causing deep worry for both Ushio and her sister, Futaba. When Miharu wakes up, she has no memories of Ushio at all, reverting to her earlier self—shy, moody, and completely innocent. Seeing this as her chance, Futaba, who has romantic feelings for Ushio, begins to pursue him. Ushio now must help Miharu recover her memories while fending off Futaba's eager advances.