SiS was the short lived rival group to the reformed BiS. The group was made up of some of the ‘failures’ from the BiS reformation audition in 2016 – the group was active from September 4, 2016 to September 26, 2016. The members were as follows:
- Chin Mirei > Yui ga Dockson
- Coco Chanel > Coco Partin Coco
- Sion Sono > Terashima Yuuka
- Kanaboon > Left after the disbandment of SiS
- Bug Me > Left before debuting in SiS > Is now entering into MissID2019 under the name 夏目詩乃 / Natsume Shino
Before disbanding they released a video of the 4 members practising the groups 3 songs, written by the members themselves. They had no official releases and their YouTube channel only has this one video. Enjoy!