Currently no plans for serialization but if it ever happens there a bunch of things they can do with this concept.
An action romcom where they focus on keeping her true identity (and hopefully, relationship with her classmate, for once I'd like more "currently dating" stories) hidden might be interesting. The moment he returns her pass there's no point in keeping it a secret from him any longer, but that doesn't mean she or he has to expose it to anybody else.