The iDOLM@STER SideM: Wake Atte Mini! - Shoshi Kantetsu Daisouji!
Genres: Comedy, Slice of Life
Type: OVA, Episodes: 1
Aired: Mar 22, 2019
Studio: Zero-G
Source: Manga
Rating: PG-13 - Teens 13 or older
Synopsis:
Unaired episode bundled with the special edition of The  iDOLM@STER SideM Wake Atte Mini! Returns manga.

315 Production clerk Ken Yamamura was organizing the costumes of the idols in the office. Shinsoku Ikkon and Legenders also went there and helped organize the costumes while feeling nostalgic for the past.