Luh I've already watched this on YouTube before! I really thought it's from an anime series (an anime amv), but after watching it, I realized it's a short movie. I really cried during and especially after watching it. It's both heartwarming and heartbreaking. And the animation! Yeah—it's really awesome watching how smooth and beautiful the art style is. All in all, I enjoyed how brief and meaningful it was.
I didn't cry but it is something that makes people quite emotional and sentimental, as it happened to me. Incredible that in only 6 minutes they had the ability to generate those feelings in the viewer. And yes, the animation is the best, the level of strokes and details is top notch. Like you, I enjoyed it a lot!
Oh, I see.. I do have a low tolerance for emotional movies then... and yes, it's really incredible that a six-minute movie made me feel a range of emotions in a short period of time.