Mizuki Nana is currently staging her 7 days NANA MIZUKI LIVE GATE 2018 which she perform at Nippon Budokan for 7 days
For each of the days , Nana will bring in a special guest & on day 3 ie. last Sun , her special guest was KISHOW
From Nana's blog
https://www.mizukinana.jp/blog/2018/01/post-3857.html
Both Nana & KISHOW sang VIRGIN CODE together
KISHOW's outfit is so typical him x)