Bocchi the Rock!: Gotou Futari no Onee-chan Kansatsu Nikki

Seen through the eyes of her little sister Futari, Hitori Gotou's recent days look as strange as ever. Futari observes the painfully shy guitarist's unusual habits, her efforts to survive social situations, and the gradual changes that followed after Hitori joined Kessoku Band.

For Hitori, every conversation can feel like a crisis. For Futari, however, her big sister's awkward struggle to make friends and move forward is simply another fascinating subject to record in her observation diary.