Zenbu Kimi no Sei da. (ぜんぶ君のせいだ。) is a "yami-kawaii" idol group formed in 2015. Yami kawaii is a style that combines themes of sickness and cuteness. They released their first digital single "Neo Jealous✡Mero Chaos" on July 8th, 2015. They released their second digital single "Shit End Placebo" on August 12th, 2015. New member Hitomi Yotsu joined the group shortly after the release. On October 17th, 2015, Yumesaki Asuna withdrew from the group.