Bis (Japanese idol group)

Bis (stylized as BiS), also known as Brand-new idol Society (新生アイドル研究会, Shinsei Aidoru Kenkyūkai), was a Japanese alternative idol girl group that was founded in 2010 by leader Pour Lui following a brief solo career. With music, performances and videos that are extremely different from the typical idol group, Bis have come to be known as alternative idols. They disbanded at Yokohama Arena on July 8, 2014.

Exactly two years after their disbandment on July 8, 2016, Pour Lui, Kenta Matsukuma and Junnosuke Watanabe announced that Bis would reform under a new lineup including Pour Lui, and that auditions were going to be held. The second generation of Bis disbanded on May 11, 2019, at the end of their "Are You Ready To Go?" tour.

On the same day as the disbandment of Bis' second generation, Watanabe announced that he would be holding closed auditions for a third generation of Bis, and the new members officially debuted at Tokyo Idol Festival on August 4, 2019. The third generation of Bis disbanded on January 12, 2025.