This Twitter user posted a not that good photo that she secretly took at July's Shakunetsu no REAL SUMMER PARTY 2019 :
https://twitter.com/nana64548884/sta...85204443631616
Considering the Japanese media didn't post any photos or report from Shakunetsu no REAL SUMMER PARTY 2019 (probably due to Being's request in line with DAIGO's health scare he suffered from the concert) , this's better than nothing
I don't know if the photo was taken before or after DAIGO's health scare but at least you can see that even though he wore sleeveless just like SHINPEI , he can't escape from the severe humidity within Kanagawa's OTODAMA SEA STUDIO :x