KinKi Kids will be performing Mou Kimi Igai Aisenai together with Nogizaka46's Ikuta Erika (who will be playing the piano) & Miyamoto Emiri (who will be playing the violin) on this Wed's 2017 FNS Kayousai
http://www.fujitv.co.jp/FNS/2017/highlight.html#h01-20
This will be interesting