Want to clear this up a bit.
I think this match is even only if you use everything at Litchi’s disposal, otherwise it’s an extremely difficult and frustrating match. This match is a lot about controlling momentum - Litchi gets it from landing a clean hit, Jin gets it by (somehow) getting in. MIdscreen Jin should be crouching (this avoids Litchi 6b[m]) and doing 5D to any careless air approaches. Using 2b[m] and 3c[m] can keep him in check, 3c[m] goes into IAD bnb and 2b[m] on CH goes into itsuuC. If you catch him blocking, you can do 2b[m] > 6a[m] > haku hatsu chun (hard at the optimal range) for high or 2b[m] > itsuuC for low. Itsuu to 5D has to be done preemptively, not on reaction, making it a bit dangerous.
Don’t underestimate Jin’s pressure game. His 6A is one of the faster overheads in the game, although bad if blocked and has small range. Against a good Jin it’s pretty much pointless to FD, just try to IB what you can and look for a good spot to backdash or sj8 into kara fastfall or something. He has a lot of freedom in his pressure so be prepared to sit for a while. IB > Tsubame is a good escape option, counter assault is fine too. Hatsu is NOT a panic button reversal, it has no invul at all, it’s a ROLL reversal. When used out of a roll or as an air-to-air or anti air it is pretty good (better to have meter to RC just to be safe) but it shouldn’t be used outside of these situations. Thankfully some of his mixup doesn’t work on Litchi but his more dangerous ones do. If he has meter always look out for IAD j236D. Basically if Jin is in your face and you have less than 50 meter you have a problem.
As far as specifics, as far as combos go the main thing you need to know is after itsuuA follow up you should be using dash 6B 5C (his hitbox is silly).
As far as vs Ragna, I’m copy/pasting from DL:
Anti-Ragna measures:
Ragna’s 5B is ayusss. Fish for ch 5A. If he does 5B, your 5A should win, go straight into 5B > bnb. If he reads 5A whiff, he can 5C, but that’s a pretty big risk considering that Litchi’s 5A recovery is small.
Ragna can’t IAD on Litchi at all. If he does IAD JC too close, you can 5A it out of start up, on CH go into JAB dj JBC (daisharin if you have the meter). Outside of that, Litchi’s crouch is so low that you can just crouch under IAD JC. If properly positioned, you can 2C > Tsubame > whatever combo you want.
Ragna’s 6A is troublesome. If you do decide to jump at him, make sure you fall with barrier. If you want to deliberately bait it, you can kara fastfall, he’ll position himself to anti-air you. . . and you’ll be on the ground. Don’t do it too much to keep it fresh.
As far as okizeme goes, Ragna’s DP goes through Shishin, so doing Shishin right away isn’t a good idea. Optimally, you want to end your corner combo with J7C, like 6C > Tsubame > J7C > 4Kote > JC whiff. This will put you out of range of DP and will give you time to react to anything he can do. As far as ending combo with 3C ender, still position yourself slightly away, and delay your Shishin. At the very least, if he does do wakeup DP, he’ll get hit by the tail end.
Ragna’s pressure is as long as you can IB. Hell’s fang is punishable on IB, as is a bunch of other moves. They’ll try to go into jump cancellable moves (6A, 3C), and jump and see what you do. If they have meter, Hell’s fang > RC > Mixup is legit. 6B is cancellable on block, as is 2B, but if they use 2D for any reason, IB and punish. If he does 5D, IB the first hit and backdash/command backdash - you can IB both hits but if he cancels before the second hit and you’re sitting their waiting, he’ll keep initiative. IB Dead Spike or DP it - they’ll normally use it after a move they can’t jump cancel (5B, 2C, 5C). If you fail IB for some reason, try not to challenge it - it’s actually plus on block.
Litchi on offense - try your best not to use 5C[m] in pressure, it’s a free punish for Ragna. If you do for some reason, try 5Cm 5D, or something to get you out of it. Even if you go into 3C[m], if he IB’s both hits, he can just dash 5B/jump JC. You can try to do a guessing game where you do 5C > itsuu GP, but if you want to minimize risks it’s better to not even try in the first place. 5C is fine if you are going to cancel into Daisharin.