If the Man in the Mirror thing is real (it's not but like this fan fiction, let me get my fan fiction on). It's just going to be The Heart Part 6 Part 2. He's probably going to attempt to play the victim (like Kendrick said on MTG), and take another crack at flipping songs from Kendrick's albums because he failed horribly with the Mother I Sober one. Maybe he flips/references Mirrors, and/or Mortal Man by Kendrick where he said:
When shyt hit the fan, is you still a fan?
When shyt hit the fan, is you still a fan?
That nikka gave us "Billie Jean," you say he touched those kids?
When shyt hit the fan, is you still a fan?
His angle would probably be that Kendrick himself doesn't truly believe he's a pdf (he didn't even think MJ was one) but if he's willing to falsely accuse someone of that to win a rap battle then he hopes the best for him, and anyone who's cool with him right now (hopefully they'll never be falsely accused). Because they were cool once, and he (supposedly) tried to reach out to him since it was "friendzone" at Kendrick's show a year or two ago. He would probably end it by trying to relay that Kendrick is the man in the mirror. He should change his ways, because if he really wanted to make the world a better place, and unify the west. Then he shouldn't do it by making a pdf anthem against someone he doesn't truly believe is one.
I listen to both Drake & Kendrick (I rock with Kendrick more) btw. I think Drake should either stfu for a while, or admit he lost and he has some reflecting to do. But breh is in his hardheaded/troll era rn.