Hey Caribdis, love your games so far. Just finished OiaL and now discovering this one and I'm already hooked. The setting is awesome, the jokes and easter eggs are incredible and the pacing is even better compared to OiaL.
One specific part I'm really enjoying is that you're using more music and sound effects than in your previous game, which really helps with the general ambiance and the pacing of the game.
If I just had one thing to add, it would be to use even more background music in general. It would fill up the few times when I go through longer dialogues with just some background soud effect and which feel a little empty (like at one point during the train part or right after punching Axel and there's just the rain noise). And I believe it could help you put in more dramatic effects when the music stops (either it can simply stop, switch to another kind of vibe or transition to some of the effects you've been using here).
If you want some inspiration, you could check out Innocent Witches from Sadcrab, or Hero's Harem Guild from Komisari. It's been a while but if I remember right they did a great job in that aspect.
Anyway, just my two cents, hopefully it helps. Keep up the great work !