Not too shabby a platform jumping game, although there are some things that could be improved. I hold a personal grudge against the jumping mechanism. While the graphics are a plus, the obstacles on the ground blend in a little bit too much with the background in the beginning. You start off jumping low and so, have difficulty jumping over middle-tier obstacles. Once you jump higher...well, I there were a decent amount of times that I jumped over a grave and right into the fire that WTF flew out of nowhere and I was totally at a loss because I can't control how high I jump. I personally don't like how some of the basic game mechanics are restricted from the player in the beginning like double jump (there's no other way to pass the fire + tomb combo) but that's just me.
On toppa that, most games like this give the player a short period of 'invincibility' after they hit something to ensure that if the player gets punched in a direction they totally didn't intend, they don't suffer chain damage. This jumping game doesn't have that, so if you hit something in the later part of the game (or even earlier) you might suffer more damage than intended so that is quite infuriating, especially taken into the account that some obstacles are so hard to dodge it almost seems unfair. But your character can recover relatively quickly later, so that's a plus.
Overall it's quite balanced once you get used to the flow. Graphics and music are great, medals were really fun to get, and it becomes a good game to kill some time. I suggest to get the last medal, you should get all jump upgrades first, top priority, try netting a few medals in one run at a time, and save fox ears upgrade for last. I kind of expected the game to expand on the story a little bit due to the tutorial in the beginning, but it didn't. That doesn't detract from the charm of the game, though, because the characters speaks for themselves well enough throughout the game without elaboration. Happy Dreams!