Cygames will host the Granblue Fantasy Showcase Versus: Rising and Relink Part 1 live stream on September 16 from 18:00 to 19:20 JST. You will be able to watch it on YouTube.
The first part of the broadcast will focus on Granblue Fantasy Versus: Rising and the second part on Granblue Fantasy: Relink.
Source: N4G PC Granblue Fantasy Showcase Versus: Rising and Relink Part 1