For the amount of work in a short amount of time, and it pulled some emotional heartstrings like some of my favorite games like To The Moon, which the creator told me this was based upon, it gets 4.
Why it doesn't get a 5:
1. The English dialogue, while decent, is obviously not from a native speaker. A lot of saying "Owwww" after an insult, jab, or surprise which gets annoying, but is tantamount to immersion breaking. Especially since the game is set what seems to be a European country of some sort. No native English speaker says "Oww" repeatedly, only Asian English speakers do that (I'm Asian, so I know).
2. Some minor gameplay annoyances. Sometimes you can't get through a door to the next area if you are coming from the side and must face it head-on. The fetch quest seems artificially extended, especially those parts that simply have the escort character saying to check the notes or grunting, not advancing the story.
3. The plot was a bit predictable, however, even with that in mind, it was still very emotional and heartfelt.
It gets a 4 as those things doesn't actually detract from the story focus. The game can be finished in under a couple hours, if not just one.