Mahito (Jujutsu Kaisen) vs Scar (Full Metal Alchemist Brotherhood)

No prep

In character

Standard gear

Alchemy = cursed technique

Both can kill each other

R1: domain expansion restricted. No philosophers stone for scar and use of only his destructive alchemy hand

R2: domain expansion allowed. Philosophers stone allowed.

Mismatch, Scar is basically fodder to Mahito. Also Scar never used a Philosopher's stone.

Massive speed difference. Mahito stomps

I don't think the speed diff is actually that wide. Scar was dodging bullet fire and keeping up with a fatigued bradley. But yes, scar will lose more often than not. Unless he can get a direct hit on Mahito's head, which I doubt he can get close enough with only his destruction alchemy.

If he does gets close though, then I doubt mahito can tank destruction to the head.

Mahito wins 7/10