@Jet it looks like everyone of them are crossdresser. And I think some worker in Japan doesn't really care about your personal life (since they care about privacy) as long as you do your job
@Pachka84 Actually she is, if you read the prequel where they're riding the airplane you'll notice how Kase possiveness and this also goes with the school festival where she ask Yamada to not wear the maid custome.