Tsuzuki Shifune

 was the owner of the Live House SPACE where the band Glitter*Green often performs. She is quite strict and has a no-nonsense personality and very high standards when it comes to music. The cast always referred to her as "Owner" instead of her real name.

Background
She was a member of a nationally renowned band that had live tours. To dispel the notion that "livehouses are scary", she launched the livehouse SPACE where anyone was able to perform. However, after a band did not finish their performance, she began to hold auditions to determine if a band is suitable to stand on the SPACE stage. In Episode 9 of BanG Dream! 1st Season, she announced that SPACE is closing down.

In the third season, she became the adviser for the BanG Dream! Girls Band Challenge!

She appears once again in Poppin'Party's Band Story 3.