Hello Kitty vs. Cinnamoroll vs. My Melody vs. Pompompurin

Hello Kitty vs. Cinnamoroll vs. My Melody vs. Pompompurin was a three-round Splatfest tournament, which was divided into the following rounds:
 * First Round: Hello Kitty vs. Cinnamoroll
 * Second Round: My Melody vs. Pompompurin
 * Final Round: Hello Kitty vs. My Melody