[@TaintedMushroom] I was aware of parts of this app, but I have discussed it with Majoraa.

There are a few similarities between Endless Eclipse, Oros's black starry katana and Secret Seeker, Bardo’s black starry katana. They even have the ability to divine information, albeit in different ways. But overall I think Bardo and Oros the Mad have enough differences that changes aren't needed. They're both occult themed, but one is a scholar and the other is a cultist that draws on the power of eldrich abominations. I only bring it up because I mentioned this was a concern of mine. 

Secret seeker feels pretty loaded without the random "skill" increase. I'm not sure how long they would last or how we'd determine what to increase either. We feel like just knowing what the opponent is capable of would give Bardo an advantage he could exploit anyway. This next bit is more of a warning than a critique, but chaos damage does little damage to espers and is less impressive than arcane attacks vs monsters. Though it has some niche uses/advantages against non-monster magi and is effectively an anti-material weapon. Just making sure that's what you want. 

The buff to movement notes is quite strong. A single rank increase would be fine but doubling it is effectively going beyond what an "S" rank note can do. If you need more oomph out of your notes, the [weightless] note triples the push distance by making your target unable to really "stand" on the ground. 

If that all sounds reasonable to you, make the changes and fling Bardo into the dark abyss of the character section.