Prisma Illya Crossover Event ETA?

Hey Sowc,

if you take a break in this summer, you'll miss the summer event with the waifu servants in bikini, sadly for you :/
Back to your question, the Prisma Illya Event should arrive at begin/mid September, so plenty of time for planning ahead.

Since the NA schedule is faster than the JP schedule it might start very late August or very early September.