endlessblockades commented. January 17, 20212021年1月17日
I'm not sure, I thought it was just him because the post title is "Kyouka Official Retirement", and the band would end because of his decision. It also states that "the reason is announced in the video on this radio appearance, so I hope you can watch it till the end...", but my Japanese is not good enough to really get what they are saying.