When they fight each other in the one of them episodes I know how she will die.

I think something is wrong with the translation.

Not to mention that is clearly Tieria Erde, not Setsuna.

Jazz said:
Not to mention that is clearly Tieria Erde, not Setsuna.

And now it's fixed.

Jazz said:
Not to mention that is clearly Tieria Erde, not Setsuna.

Smart man.

Tieria Erde has purple hair, not black. And that cut is Setsuna's hairstyle for sure. The only error here is his suit being purple instead of blue.

I hereby declare the creation of a Setsuna F. Erde or Tieria Seiei tag.