Just decided to throw out what combos I came up with. My combos were pretty much put up here but with a little variation, so putting mine up. All of these done on Nanaya. This is C-Seifuku Akiha.
No Meter Combos:
2a>2b>5b>6b>6c>2c>5c>j.bc>dash.b>dj.bc>airthrow
~4500 dmg. I know it seems abnormally high, but I don't know. It's on the default damage. Doing a 236c finisher instead of an airthrow finisher will put you at around ~4700 dmg.
2a>2b>5b>6b>6c>2c>5c>j.bc>dash.c>dj.bc>airthrow
~4600 dmg. Doing dash.c instead of dash.b is adding in about 100 more damage in this combo. Doing a 236c finisher instead of airthrow finisher will put you at around ~4800 dmg.
100% Meter combo
2a>2b>5b>6b>6c>2c>5c>>236c>j.bc>dash.b>dj.bc>airthrow
~5000 dmg. The timing of the 236c into the j.bc is very tricky. Right after the 236c animation ends you have to jump into the air immediately or else your opponent will air tech out of it.
(This combo is assuming you have 22c already put down.) 100% meter combo
2a>2b>5b>6b>6c>2c>5c>22c>j.b>j.bc>airthrow
~4900 dmg. The timing of the 22c right after the 5c isn't too bad for timing, it's fairly easy.
200% Meter Combo
2a>2b>5b>6b>6c>2c>5c>>236c>j.bc>dash.b>dj.bc>236c
~5100 dmg. For a 200% meter combo, IMO, doesn't seem like it's worth it, but just throwing it in there for people who want to do something flashy.
(This combo is assuming you have 22c already put down.) 200% meter combo
2a>2b>5b>6b>6c>2c>5c>22c>j.b>j.bc>236c
~5000 dmg. Again, for a 200% meter combo, IMO, doesn't seem like it's worth it, but just throwing it in there for people who want to do something flashy.
-Edit-
For any one of these combos, you can take the 2a out of them to add around 150-250 dmg to the combos.
-Edit 2-
I forgot that you have to do a little variation on these combos for those short characters (Ren, W.Ren, The Nekos, Miyako, whoever else I'm missing.) What you need to do is just do 2a>2b>5b>6b>2c>6c>5c instead of the normal 2a>2b>5b>6b>6c>2c>5c. Everything else should work just fine.