Yeah, the atmosphere of this fight, on the anime, would be better with a ominous BGM. Something a la Dies Irae, but that would be ask too much for a japanese show.
But if Hiroyuki Sawano were on charge of the sound design, I bet that crazy mfker would try something like that. The dude mixed...
The dude has a fucking excalibur , I guess that's why the poor princess can't handle the long schlong.
The warrior lady, on the other hand, have a pletora of skills to tolerate pain and all.
Understandable.