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

Bocchi the Rock! Episode 11.5,
Bocchi the Rock! Recap,
Bocchi the Rock!: Gotou Futari's Big Sister Observation Diary,
ぼっち・ざ・ろっく！ ごとうふたりのおねえちゃんかんさつにっき