A phenomenal implementation of the theme and a very cute love story! The amount of art and attention to detail in the VN is also impressive, great job!
If I had to beat you up just a little, I'd say maybe this story could've benefitted from an editor/proofreader, as it's pretty clear from your writing that you're not a native english speaker, but it's understandable for the time frame and such.
Overall I think the pacing is well done, and it's incredibly cute! A great entry, you should be proud! ♡