Thank you very much for your comment. I love that you see a similarity with Castlevania. I love the Castlevania saga, especially the older games.
My intention is that the player's inertia would be a nuisance to stay on the platform, Super Mario style.... I think that what will improve this problem a lot, will be to add the 'Coyote Jump' style, so the player will have a little more time to jump before falling... I will investigate and improve it in future updates :)