Umihara Kawase (海腹川背) is about a schoolgirl with a bag of holding and a rubber fishing line setting out to rid the world of giant mutant fish.
This video plays the fastest path of the game having only two bosses, which you can find at the Field Map page.
The Umihara Kawase page has more information about this game.
The boss levels are quite long in this movie ― they can't really be sped up, but the authors of the movie have done their best to make them worth watching.
Thanks to a different route and a lot of optimization, this run obsoletes one of the oldest previously unobsoleted runs of the site by about 01:29.04 minutes.
No frogs were harmed in the making of this movie.