About Invulnerability

[Mal Nova]

Invulnerability doesn't control the actual increase of mass, but the density, which would make flesh and such, more solid in a better sense. Then again, the only thing making the ear drum more denser, would do is muffle a high pitched sound or deafen yourself, but it's already been explained to me that using such sound tactics in a custom move, wouldn't be 100% effective, so it's a bit of a mute point(no pun intended) in the end isn't it?