Just to add my grain of sand to the topic, someone already posted on twitter the "reaction" from the japanese to this chapter, and it seems all (or most at least) of them read it like "become pro player/getting cosplayer GF". They're even making jokes about Seika doing cosplay just to win Bocchi's attention-
Pd: Also, yes, as we all know, Kirara characters live on this weird "Yuri limbo" where they're gay AF but at the same time none of them confess their love for each other, this may not be the exception-