OK, let me see. . .
DISADVANTAGEOUS MATCHUPSWarakia - Is
hard to fight in neutral. Wara's jB is just way too good. His pressure can keep you locked down for a while. On the other hand, he restricts your blockstrings massively because of 5B and 2B. 2B shuts down all ribbon options except for a spaced j236B (NOT tk'd). 2B rapes as anti-air, and jB rapes with air to air. You're only hope is to knockdown with airthrow or something and oki to death since you do a shit ton of damage and he has shitty defense. Not fun at all. 6/4 - Warakia advantage.
Warc - Oh lawdy, this is V Akiha's worst matchup by far. Another jB that rapes her. Simple. Warc controls airspace better than you can. Try to fight her the way you fight Warakia. 6.5/3.5 Warc adv.
Tohno - Tohno isn't awful, but it sucks to fight him in neutral because of his jA. jC is also pretty homo. His pressure is meh but he has good anti-air so careless flying will get you raped. Airthrows and well spaced jB's do well vs him. 5.5/4.5 Tohno adv.
Nanaya - I'd rate this match the same as Tohno, but for different reasons. jA is still gay, but PRESSSSSUUUUUUURRRRRREEE. Once Nanaya makes you block, good luck. Keep an eye out for sj mixups and overheads and DON'T challenge his shit. If you smell a throw, a jump is MUCH safer than mashing because Nanaya gets 5.5 K easy. 5.5/4.5 Nanaya adv.
Len - Len is dumb. Her air game is dumb. Flying around is the only way to win. She's a lot like Wara - gdlk air to air and anti air. Proper (extremly proper) spacing is needed to deal with this cat. Also oki is harder since she's so small. Either 5.5/4.5 or 6/4 Len adv.
Miyako - Another small dumb loli bitch. Although you have ribbons, Miyako has jA/B/C. Also her pressure is gdlk - and her grab is 2.5K for free. Again just sit and wait, unlike Nanaya her overhead is meh, so wait until she goes for a throw and jump out and FLYYYYYY. Also watch out for 214b crossup but it can be sheilded/dodged on reaction. You also have to change your pressure vs her since she has the best roll. 5.5/4.5 Miyako adv.
EVEN MATCHESSion - Sion's tools are her gayass damage and 6B throw. Also she's got amazing pressure. However her pressure relies a lot more on guessing games than the likes of Miyako or Nanaya. At neutral, Sion can't do much about you flying around and spamming ribbons intelligently - however she does have jC, so watch out for clash. 5/5 even
VSion - VSion is similar to Sion aside from pressure. Summon mixups suck for you, and VSion has good dmg output. Treat her pressure like Nanaya and Miyako - she also does 2K off throw (or 1.3K in arcade
). Her jC is gayer than Sion's (in my experience at least) it clashes with your jC and you can't do shit. 5/5 Even
V Akiha - duh lol.
Aoko - Has GREAT camping tools in orbs, but so do you. 214A/B, j236B and 228B all deal with orbs and 228B and 214B will beat random lasers. You don't have much freedom and flying, and you
must restrict airdashing in your strings, because of her anti-air. 5/5 even.
Ciel - Ciel is gay but you can beat all the gayness. Ciel only combo sends her to corner fullscreen and you can get a pit off it. You can beat Ciel in clash battles and jC hits low enough to hit her out of her dash (as does jA). However, Ciel is gay. 5/5 even.
ADVANTAGEOUS MATCHUPSKouma - Fly, VAkiha. Kouma has a high damage output but she can fly a lot better than Kouma can. Dash SJ lets him keep up but still, VAkiha has mobility. Thanks to double airdashes and stuff you can keep him guessing when to sheild. Intelligent use of ribbons in pressure keep him from sheilding in the middle of your blockstrings. 6/4 Vakiha adv.
Arc - Arc is floaty so she's a nice target for ribbons and jA/B. Arc has good offense but 214b is free bara. Throw only does 1.4K at max (and no one goes for that combo so realistically its 1.2 or so). She does have a jCAB mixup and a fuzzy that she can combo off of, and because of her floatiness, she has good air offense. However VAkiha controls air better than Arc and deals with her air to air well, along with 2C anti-air being effective. 6/4 Vakiha adv.
MHisui - MHisui's mobility is bunz, but she has good zoning. Dash beats jetpack. Use oki to just rape her but watch out for wakeup sheilds or arcdrives. Getting hit sucks because of high damage output but you can do the same to her. 5.5/4.5 Vakiha adv.
Nero - Nero has good zooning but Vakiha can deal with most things with dash 2c (whiffed 4c, A Deer). VAkiha's lockdown is too strong for Nero, and she has several moves that beat jC (jA, jB, 2c). 5.5/4.5 Vakiha adv.
(will edit with more later)