Give yourself better credit, this was certainly a well done animation, in both story and visual aesthetics.
Admittedly, if it were more detailed, the characters might have received more empathy from me, but in the short time of this video I was given a relatable story, and it was great.
The strongest point of their characters was the bond they shared, those experiences that shaped them made them into stronger people, willing to lend a hand to others in need.