Kenkappuru to Mimamoru Watashi

One day, Akari, a high school student, is told by her childhood friend Eita, “I...have a boyfriend". The boyfriend, a classmate named Sanae, is mature in contrast to the childish Eita. Akari becomes increasingly curious about their relationship and how they got together, and decides to observe them... This is a gentle and heartwarming BL comedy from a girl's point of view!