Tristan Delaney

Hmmm I see your point, That does make sense. Gah I dunno *scratches head* TRISTAN, clarify please <3

I believe what Teayre said is correct, but Tristan can clarify. This situation actually occurred when Oikawa and I were dueling, as his shield and my sword had Paralyze. I scored a critical hit on him, but since his shield triggered on a 9-10, it was a "simultaneous" paralyze effect. So that time a "round" went by with neither of us taking an attack, similar to this where a Paralyze weapon triggers on a Parry.

If that is the case, then Parry would function similar to the Paralyze enhancement on a shield, where it triggers on a hit. If that is the case, then the attack would be stunned for his next post, giving a evasion free attack for the defender on their post immediately following the Parry. In terms of Paralyze, I normally RP it as ending on the post of the trigger...er (If I Paralyze an opponent, then the effect ends effectively on my turn). So then in this case, weirdly, the attacker is the triggerer, so the effect ends effectively on their turn:

P2 Parries -> P1 Attacks and is Stunned (Effect "Starts") -> P2 Attacks / No EVA for P1 -> P1 foregoes turn (Effect "Ends") -> P2 Attacks Normally

Note: Seeing that flow can be a bit confusing, as it doesn't trigger in a fashion that has happened in the past, because it effectively doesn't trigger on your "turn." However, I think people that had Paralyze on their shields in the past probably had a similar scenario.

Calrex explained it well enough.