Sumo wrestler Slime

I decided to try this because I wanted to play a sumo game, and I thought this looked like the best one on Steam. I think I was wrong. As near as I can tell, this only qualifies as a game by the very loosest definition. You start of by deciding if you want to be a power, weight, or skill slime sumo wrestler, and then pick a skill. Then you sit there and watch your slime fight through a tournament's worth of matches. Note that I said watch, because as far as I could tell, no button I pushed influenced any match in any way. In between tournaments, you have "training." This consists in either running a race across a rocky field with a bunch of other slimes where the only control you have is a single jump button that really doesn't seem to do much, or doing a sort of marble race game where you can't influence anything in any way (as far as I could tell) and all the other marbles seem to naturally go much faster than you. I could of course be completely wrong about there being no controls, because there is no tutorial, explanation of gameplay, or even an options setting where I could look at the keybindings. There's also no way to adjust the graphics setting, turn the volume down, or even an exit game button. The only option is to switch the language between Japanese and English.