Hamsters!!
Yes i would agree to some that the starting song sounds depressing, and i honestly thought that the hamster was gonna die or something. Or perhaps, already dead! But i liked the idea how a simple sunflower can be heaven. It really shows how simple things in life can actually be magnificently important and wonderful to another. :D
Oh yes, i must add that drawing hamsters are no easy task. They're one hard animal to draw! And thankfully your hamster does look like one. A cute one at that! Loved the storyline, and also the animation. I thought that it was a pretty decent piece of work. Keep it up! XD