Flash hypos up, hits a piece, damage is dealt. Afterwards, plasticity shows up on dial, does flash stay adjacent?

If he wants to. If he doesn't, he may continue moving.

Why is that? He is in the middle of his movement and plasticity stops movement.

Opposing characters entering a square adjacent to this character must end their movement, even if they would not have to do so normally.

He's not entering an adjacent square, he's already there. So he can leave with no problem. If he moves into another adjacent square, then Plasticity will get him.

It stops movement when a character enters an adjacent square. Getting it after the character has already become adjacent doesn't do anything. The timing for triggering it has already passed.

Just wanted clarification. Thanks.

It stop movement for characters that enter an adjacent square, so if flash hypos up and makes a close combat then puts you on plasticity it's normal break away

No, read the above posts. It's not any kind of break away, you just continue your movement.

if they are continuing their movement they would only have to stop if they enter another square that is still adjacent to that character.

Edit: nvm already answered

Plasticity says you can't auto break away, so, he stopped to attack and now needs to move again for the rest of hypo. So since he can't auto break away, he needs to roll for break away to continue hypo.

No.

You only have to roll to break away when you BEGIN your movement. With hypersonic speed, the attack occurs DURING your movement, so the character counts as continuing to move for the entire action. And since he's only continuing his movement, he won't have to roll break away.

If a character occupying a square adjacent to one or more opposing characters is given an action and attempts to move, that character must successfully break away before it can move.

Given the free action to attack and then attempts to move with the hypo. So needs to break away. Sorry, I am asking questions from my group now. Thank you for all the help.

What's the question?

If you're asking if the free action to attack requires you to break away, the answer is no.

You check for break away when you initiate hyperosnic speed, and then you don't have to do it again for the rest of the action, because after that point, you're already moving. It's really that simple.

Flash is not given an action to move when adjacent to a character in the middle of hypersonic. He is resolving an action.

This is why he does not have to roll breakaway.