Naisho no Tsubomi

Tsubomi Tachibana is a fifth grader navigating the challenges of adolescence, including her mother's pregnancy, her first menstrual cycle, and the onset of romantic feelings. Her life's simple routines are disrupted by these changes, forcing her to confront her emotions and insecurities. As she struggles to understand her new experiences, Tsubomi's relationships with her peers and family members are also affected.