Miraculous metal that will mold to the breasts when used as breastplate: Oppainium.

That's some serious Plot-grade Oppainium right there.

Rathurue said:

Miraculous metal that will mold to the breasts when used as breastplate: Oppainium.

Either that, or some form or shock-absorbent, meta-stable quicksilver. It instantly hardens when hit, but otherwise remains flexible.

Kapten-N said:

Either that, or some form or shock-absorbent, meta-stable quicksilver. It instantly hardens when hit, but otherwise remains flexible.

It can already be made nowadays using wire mesh and reactive metamaterial. Essentially Oppainium is some kind of phase-solid-non-Newtonian liquid.