That's all there is.
Personally, I'm glad of that. I usually turn down the sound/music on most of these games & VNs, and especially on those ones with recorded dialogue.
In the case of the latter, I find the voice acting to be so cringe inducing that I have to mute the voices or burst out laughing.
Thanks for answering, was afraid of not getting the correct version of game, or something wrong making the sound not play on my computer (Tought so because there are music/voice/sound effect parameters in the game).
I see where you come from about sound, I do also lower music in most games while putting sound effect higher. I just like to have some music or sound in my ear when I play instead of just pictures and text. Make me feel like game become more lively, or like adding some color to a picture.
Another question if I may, at some point ingame (around day 6, I think) you suddenly get the small icon which tell you where your sister is in the house. But at the same time the "stat" screen disappeared (the one with lust/love/seduction + character score).
Is this also normal for a game feature to disappear or just me ?