DJ MARIA at an underground party May 31?

Hi all, I'm going to be visiting Osaka later this month and saw that one of my favorite DJs, DJ MARIA, will be spinning a "TBA" party on the 31st.

I was wondering if anyone had any leads as to what party this might be and could point me in the right direction? If it's a gatekept party, I can show that I've been to plenty of similar parties in NYC over the years!

Thanks in advance!