Ladybaby will appear at the YATSUI FESTIVAL! 2017, a festival organised by the comedian and sometime DJ Ichiro Yatsui. There will be a mix of idols, DJs, and other entertainers appearing in live houses around Shibuya. There are a lot of great idol units appearing so it should be fun.
When: The festival is June 17th-18th 2017. Ladybaby’s set is 20:15 – 20:55, June 18th (full festival timetable, scroll down for day 2).
Tickets: 6800 yen. No announcements about buying tickets on the day, but it is likely to be possible since it is a festival with many venues.
Advance tickets are available at Eplus but this Japanese site does not accept foreign credit cards or send tickets overseas. However, if you are in Japan you can buy advance tickets at a convenience store: see this site for more information (I cannot vouch for their purchasing service as I have never used it, but the advice about buying tickets is up-to-date and correct).