In August 2019, Zuzu Death took part in the MONSTER IDOL audition, under the name "Yuzu". She was eliminated after the initial interview and elimination process.
On September 30th, Zuzu Death's addition to BiS was accidentally leaked by the website Storywriter. Afterward, Watanabe asked fans to forget the leak happened.
The following day on October 1st, Zuzu Death was officially unveiled as a member, with her eyes obscured. Unlike with the previous members, she would have no specific number of Twitter followers to reach before her face would be revealed, it would be entirely at Watanabe's discretion.
On October 7th, only a week after joining, Zuzu Death left BiS without debuting or revealing her face, citing family issues for her withdrawal.
On November 6th, Zuzu Death appeared in the first episode of MONSTER IDOL, which documented her previous attempt at joining WACK, including her elimination on the first day.
- Stage Name: Zuzu Death (ズズ・デス)
- WACK Audition Name: Yuzu (ユズ)
- WACK status:
- 2019.09.30: Joined BiS
- 2019.10.07: Left
- WACK Groups:
- BiS (2019)
- [2019.11.06] MONSTER IDOL