Bocchi the Rock!: Gotou Futari no Onee-chan Kansatsu Nikki
English title: Bocchi the Rock!: Futari Gotou's Big Sister Observation Diary
Japanese title: 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
Alternative titles: Bocchi the Rock! Episode 11.5, Bocchi the Rock! Recap
Type: TV Special
Source: 4-koma manga
Episodes: 1
Status: Finished Airing
Aired: Dec 24, 2022
Duration: 23 min
Rating: PG-13 - Teens 13 or older
Studios: CloverWorks
Genres: Comedy
Themes: CGDCT, Music

This is a special program where we look back on the recent daily life of the main character, Hitori Gotou, from the observation of her younger sister, Futari Gotou.

(Source: Bocchi the Rock! Wiki)

This episode was later released as part of volume 5 special of the Blu-Ray and DVD release of the anime.