Aizen, Flash and Nightwing VS Kirito, Green Arrow and Batgirl.

Base Aizen.

DCEU Flash.

Post-Crisis Nightwing.

.

War of Underworld arc Kirito.

Post-Crisis Green Arrow.

Post-Crisis Batgirl.

.

Both teams get 1 day of preparation. The teams can make/create anything they are capable of.

Teams have complete knowledge of each other (opponents and their teammates).

.

Who wins?

Don't know who Kirito is, but what are Ollie and Barbara gonna do against Aizen?

Tbh... aizen episode one bodies the entire team, all he has to do is show them his shikai and all of them are screwed

Aizen solos, probably DCEU Flash does too.