Thread:ScottKazama/@comment-4228073-20150120165610/@comment-24272331-20150121071352

However, it doesn’t indicate whether the two girls will be playable, or if they’ll simply appear in the story mode, which seems more likely the case.

It clearly says that they're more likely appear only as NPC, not playable. But knowing Mori, they might be playable in the future.