It was good, but there were some flaws
First, I'd like to say that your use of angles is good (though somewhat excessive, almost to the point of dizzyness), your drawing style is good and your animation is good. There are several areas in this, which are not so good:
1. Music: Really, really painful at times. I would seriously recommend getting someone else to do the music. It just didn't suit the piece.
2. Pacing: Much too slow. The entire plot and message could have been conveyed in 1-2 minutes and your story would have been far more effective for it. You don't need to show every detail of every character's actions, movements or emotions.
3. The characterisation/voice acting: The grunts got really annoying and were far too obvious. You can get a hell of a lot more meaning from non-verbal communication than: "I'm annoyed" "I'm happy". The part where the girl did a series of motions to convey something before they entered the restaurant was so unclear that it was almost comedic. I didn't empathise with any of the characters. Also, if you are going to use proper words, use them throughout. If you want to do the grunting thing, do that throughout. Don't have characters who do both.
Overall, I think that the problem could be that you are overthinking it. Try to simplify your ideas and I'm sure we'll see a massive improvement. I'm looking forward to seeing something that takes all of the advice into account.