Damage calculation is applied normally.

I want to ask another question
(Damage calculation is applied normally.)
If a monster attacks a monster that have that words in its effect (example : Marshmallon), that attacking monster will get piercing effect?
I'm debating this with my friend. I said no while he said yes.

Of course piercing effects apply
Marshmallon does not stop or negate any attacks.
Plus it says Damage Calculation applies normally ....

Key wrote:Of course piercing effects apply
Marshmallon does not stop or negate any attacks.
Plus it says Damage Calculation applies normally ....

I mean that all monsters that attacks Marshmallon will get piercing effect because of that words.....
(He attacks my Marshmallon with his crystal beast topaz tiger and that's the start of our debating)

No. Monsters without piercing will not get piercing.

Damage calculation is a sub-step in the battle phase, where you can activate Honest, Kalut and such.

Thanks for answering my question. I will tell him later and if he's not believe it, maybe I should print-screen and print it to makes him realize that he's the wrong one.

Yep the line on Marshmallon means that it can be attacked normally and if it was in ATK position damage would be applied normally as any other situation, just that Marshmallon won't be destroyed by battle. And yes only Monsters that inflict Piercing Damage (EX: Blackwing - Bora the Spear) will inflict damage when they attack marshmallon while it's in DEF Position.

The posts in this thread went in enough directions that I wouldn't be surprised to see someone misinterpret the answers to the questions.

Any time a card says 'X occurs normally', it is just a reminder of the limitations of an effect.

This reminder text is unnecessary for those with the wit and wherewithal to know that just because monsters don't die in battle doesn't mean battle damage somehow changes or stops.

That reminder text exists as a clarification for the two people new enough to the game to make a mistake in this simple matter.

Monster without piercing effect can't pierce Marshmallon .