User blog comment:Varzan Deodinm Beldinm/Most Powerful Semblance?/@comment-11188061-20150109020626/@comment-10380701-20150109023935

Nerd Alert!

There's actually a notable difference between Ryougi and Tohno's MEDP.

Ryougi specializes in cutting ethereal things like ghosts and barriers, which is why the visualization of her mystic eyes is glowy white. And apparently, she has a state in which she can just go ahead and cut reality into pieces if she's willing.

Tohno is better at cutting physical objects and unlike Ryougi, can also see dots. However, his brain will explode if he attempts to perceive non-physical things. In one route, he "killed" the way the moon powers vampires (I forgot the exact details, just roll with it) and that pretty much fucked him up by the ending.

The distinct difference between them is that Ryougi doesn't wear a Mystic Eye Killer, so Tohno is pretty much undertrained and that's why it's a pain on his brain to use it. Ryougi doesn't have this problem.

A notable thing they have in common is that they CAN kill immortality. Tohno has a track record of killing two immortals in one route. Ryougi has one, though she was fighting an immortal buddhist monk magus mad scientist with a katana.

TL;DR Ryougi is OP.