Hello!
There are a few themes throughout, anxiety/social anxiety being one of them. A lot of people have also noticed the themes of abusive relationships and loneliness. If you're interested, I saw that TV Tropes has a section for the game that was pretty spot on with what I intended the game to be about:
https://tvtropes.org/pmwiki/pmwiki.php/VisualNovel/DoNotTakeThisCatHome
Thank you so much for trying out my game!