- Nickname: Tenten, Tenko
- Birthday: August 27, 1990
- Age: 28
- Height: 143cm
- Joined: 26 May 2013
- Left: Original disbandment July 2014
- Lyrics Written: MURA-MURA
- “Killer” member
She lives with her orange and white cat, Haack.
She is a huge fan of Togawa Jun.
In 2006, Tentenko formed an experimental unit names FLORIDA with a childhood friend, Takizawa Tomoe. They would record their music onto cassette tapes and sell them to their local record store.
In 2012, she was in a band called 箱入り気分 fuck oily even / Hakoiri Kibun fuck oily even. Since they weren’t very popular, Tenten began working at the idol bar Dear☆Stage to try and gain more publicity and increase the band’s success.
In May 2013, Tenten became interested in BiS and went to the audition hoping to meet the members.
Since leaving BiS, Tentenko has become a solo artist and a freelance DJ. She also has her own record label, Tenten Records.
In January 2015, after successfully crowdfunding enough money, her debut single Goodbye, Good Girl was release. Since this, she has put out dozens of homemade albums, some experimental noise, some more conventional.
She is also a part of many other side projects: MikaTen, ZVIZMO, Deep&Moistures, 幡ヶ谷ちっちゃいものクラブ
In 2018, with Pour Lui beginning her YouTube career, she began to appear in most videos with other ex members.