This page documents information about Umihara Kawase. Many of the tricks demonstrated here are near impossible in real time and documented for the purposes of creating Tool-assisted Speedruns.
Umihara Kawase - Rubbering Action Game
Umihara Kawase is a little-known Japanese game superficially similar
to Top Secret or Ninja Five-O. The player takes the role of Umihara,
a schoolgirl armed with a pink backpack and a rubber fishing line, and
tries to navigate a series of interconnected non-linear levels called
Fields, amassing score by capturing Darwinist nightmare fish along the
The game isn't that long if you're only trying to see the ending.
Demonstratedly the game is possible to finish in about 2 minutes.
The true fun of the game is in tricks and competition. This is an
incredibly difficult game to play even if it's not a difficult
game to win (similar to Ikaruga in that respect).