Very nice.
It drops on all the lolis and nero too. I have no idea why it drops against Nero.
Either way, that combo works against everybody that 6AAA 2[C] doesn't as far as I can tell.
I should probably make a list later. Done. Please never use 6AAA 2C 6AAA. It's terrible and only works on six characters.
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6AAA 2C 6AAAAoko, Ciel, Mech, Nanaya, Shiki, WArc
5C 2C 6AAAAoko, Archetype, Ciel, Hisui, Kohaku, Kouma, Mech, Nanaya, Neco, PCiel, Roa, Ryougi, Shiki, Sion, VAkiha, VSion, WArc, Wara
6AAA 2[C]Akiha, Aoko, Ciel, Kohaku, Kouma, Len, Miyako, Nanaya, Neco, Nero, PCiel, Ries, SAkiha, Shiki, WLen, Wara
None of the aboveArc
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Another edit. Anyways, in corner you can 2C 3C 22A 5A 623B instead of 623A. Generally they'll be out of the corner slightly if you use 5C 2C 623A for the OTG followup, so you can sandoori if you want to. Also leads to pretty cool damage. Might work against some characters midscreen. Not going to test that though.