Right now Kancolle is running they summer (trolling player as usual) event.
I don't what happen in GBF, but some people playing it do got a lot of hype in this past week.

Outside of DMM server FGO also running they summer event.
All loyal slave player just do everything to get... I'm not even remember that d*mn servant name...

Cinderella-festa in I@mas is coming next month I think.
So I'll say this is marketing plan FKG try to counter other competitor.