Not sure about that, since there is no normal situation in the game where you can play after an Hscene, apart from the Incufly and the Basilisk capture scene, both of which I suspect have their own custom code to handle it. Imo, you should probably investigate the Incufly and try to figure out why this one lets you play again (it might be that it's just hardcoded to the Hscene of the Incufly).
