Genuinely might seem simple, a 1v1 race, what's so hard about it.

However, I'll allow this to not have any rules, except well for killing/hurting each other. You get turned into arby's chitlins for breaking that rule.

Ehm, now that there's no rules, she can use all of her powers and OH, she has lots of them. Let me name them.

Transporting anything/anyone into her own "Marvelous World" as she calls it. Whoever appears there will feel happier (not sure how that could help her but mkay.), if she writes things into her notebook they become truth, being a friend of youkais aliens and all that stuff. A lot of fans (If in your career Sunday gets enough fans, she literally turns almost the entire world marvelous) which means she'd be able to ask them to hold you off, can scare someone heavily by sending them to marvelous world, she can also summon herself from parallel world into there (i have not a single idea how the hell this works)

And, this is all canon. You can find all of this in the game.

However, you can tell the bot to allow her using non canon powers (which i will add, not telling what they are however.)

The conditions, race track, everything is perfect.

All i can tell you genuinely, goodluck.

Oh and hi Sinister :3