Fanclub event Yuugure no AFTER SUMMER PARTY 2019 is currently taking place
Taken at OTODAMA SEA STUDIO
https://twitter.com/D54PAKMM/status/1155398707384213504
Looks like the correct date written on the signboard has been amended as before Shakunetsu no REAL SUMMER PARTY 2019 began , Sat & not Sun was written on it
https://twitter.com/pikoBRZ/status/1155320447694594048
Yup D: