Hello,
Currently there's 2 more update coming to finish the hero path, then we will have the aya path. Aya path will be at least 6 updates, because in this path, Laura will be subject to ntr too, with Harry being stolen by Aya (HC didn't mentioned that Aya will have actions with Luca in this path, so yeah the ntr will be reversed from Harry to Laura here). HC said that there will be this much update here in order to build it with some sense, because until now with have only seen a Harry deeply in love with Laura. This path will happen when you have the choice to follow or not Aya when she leaves the meeting. After that, Laura's route will finish with 1 last update, the good ending path. Then, probably in late 2023 so, Aya's route will begin. If I remember good, HC said that there will probably have 3 path in it. This route will happen if you decide to kiss Aya early in the game during the trip.