Just glancing at the wiki some things I think the Kohaku section should've noted. I realize they're using old version info so here's a little help.
5b is unairblockable. 1st hit of 5c is unairblockable (not sure about the rest but doubt it)
j.c has 70%r proration. (this is new but so is kohaku's 3rd lowest life ranking and the section noted that)
last hit of 5c is 60%r
last hit of 22c cactus is 60%r NOT 36% proration.
236a/b/c is super cancelable on block/whiff.
AD is comboable, will go through opponents that are in blockstun/have superarmor/ are invincible
AAD is comboable, will push against opponents that are in blockstun/have superarmor/ are invincible and will hit as soon as possible. If the condition lasts long enough Kohaku will eventually start attacking as if the AAD hit anyway. (See two Kohaku's AADing each other or Kohaku AADing a 22c'ed Kouma).
Both AD's when missed will cause kohaku to impact the wall putting her into a state where ANY attack will count as if she was hit in the air (as far as juggling goes, can't say for damage), even after she has hit the ground.
214a/c allow air actions afterwards.
Doesn't mention shield bunker at all, could say that it hits low which it doesn't look like.
Don't even get me started on the bio's that people started putting up for the characters like Akiha...