Thank you... but I think that's not what I mean to ask.
I really mean to attack NORMALLY. Let me give you an example to imagine. Hope you are too familiar to FF7's Materia system because this is almost same as it is.
- Hero has everything normal (100% pure health, no boost-ele or resist-ele either... Just pure health as if you just start play a new game)... Only except just one thing for the test run which equip fire (or ice in my case but for this, let's go with fire) resistance (50% off) on his armor
- Enemy has same as above, except to test-attack Hero with fire attack (either types).
- No RNG or variable or anything that would adjust damage around, just a direct damage without calculate enemy's def/mdf... So, if i write 100, the damage will be always exactly 100. When enemy attack with fire, hero resisted it to "50" which is a success... And I tried to have hero do cast fire back (for fun), his fire damage should be 100... and yet the taken damage on enemy said "50" instead.
In other word, it have nothing with the bonus damage... Just wrong method to calculate of Element Rate trait (default in MV, not Yanfly's Element-Core even though I am using it for this materia-like system anyway).
Yes, I did checked on enemy - he is pure non-elemental as hero (naked) is. He should take it the normal damage instead halved.