I'm glad to hear that, makes me more excited for future updates :3
But to answer your question, it's both but specifically more on MC's dialogue being inconsistent! I found that some of the dialogue choices start off being kind and just end up being inconsiderate or rude TT at the end of the same line, which made some of the interactions confusing.
As for how the MC's personality comes across, it was hard to gauge if you are being kind/rude/suspicious, since the dialogue option was confusing and inconsistent— and using Ilya's reaction to gauge MC's personality is unreliable bc he's a liar, his surface reaction could be just cover up to wait for the opportunity. Only realizing what type of MC u were until you get to the store or if Ilya's has done something to you in the truck.
I think I got the captivity ending 5~ times? While trying for different endings because it was hard to distinguish if we were being rude, dismissive or kind to him bc the overall tone of the dialogue option fluctuates between different vibes.
Thank you for hearing me out! :D