AEW Fight Forever [KJ vs ???]

Plot:
In WWE, KJ had his leg broken during a fight between Shield (including his brother, Matthew), DX and Holy Hell. Since KJ is the NXT Champion, he has to defend it, but not with a broken leg. KJ went to AEW to fix his leg. He became the AEW Champion. Also made friends with Mowgli. But in WWE, The Shield broke up, revealing Bloodline and Judgement Day. Now, Shield and DX must team up. However, Brawn Strowman and Shawn Michaels hated each other. So, 4 Arms, Kane & Big Show declared a big match @ WrestleMania. KJ also met with Amos, Robin and Superman. Once again, KJ's leg broke. The Rock told KJ that he has a match in AEW but who is it? Now, KJ is in too deep...