Sakuradō 10-ban OVA: Chizuru-chan Kaihatsu Nikki 1

This work is a special OVA episode of the "Sakura-to 10-ban" series, centered on the adorable protagonist Chizuru, chronicling her gradual development from an innocent girl. The first episode focuses on Chizuru's initial experiences, depicting her physical and emotional awakening through a series of intimate interactions and training scenarios. Presented in diary format, the story combines meticulous artwork and vivid emotional portrayals to explore a pubescent girl's secret journey of development, brimming with seductive and taboo adult elements.