Oh Yokozuna! (Insane) is the second stage in Sumo Awakens!.
At the start, a few Trolly Bloggers and a Riceball Cats will appear. Nothing special. However, after hitting the enemy base, a truckload of them will appear, accompanied by THE SLOTH. After that, Riceball Cats and Trolly Bloggers will spawn nonstop.
First, start by spawning in a few meatshields. After that, stall the Riceball Cat until you've got enough money. After you've got enough money, send out everything. Once the wave has been unleashed, do whatever you can to kill the Riceball Cats. Trolly Bloggers may get in your way, but that's fine.
If you have dropped to very little money, continue meatshielding and hope that a Riceball Cat will die. After THE SLOTH has been killed, the level should not be a problem.