I saw BB Summer's Valentine's event.. and was creeped out. You literally have to press the Skip Button before a certain point, or else...
And then I had an idea; why not pit BB against another crazy scary girl who lives in a game and who makes the fourth wall insignificant? And thus, this matchup.
Both at Low 2-C, fight takes place in the Mooncell, speed equalized just to be safe, and both are bloodlusted and willing to get serious from the start (Their beloved Hakuno/Player is on the line, after all!)
BB has 4th wall breaking. She is aware of the fictional setting, and combine that with her precog to see an infinity of future's at once passively, and compute more outcomes. She can select and determine a future where Monika won't plot her away such as making Monika slower, or something, or even perhaps a future where Monika won't have plot manipulation. She can also use that ability to adapt to the hax, perhaps.
Yup, BB's broken azz precog lol. The ability to see an infinity of futures in under a second, and then compute further results for more analysis. Then from there she can select and determine a future of her choice. (Fate manipulation, but more broke since it can affect all of reality.) from there she can use CCC to finish her off.