Strategy
Neutral
Chiho is best suited to rushing the opponent down, using a mixture of fireballs, 3HK slides, dashing HP and j.LK to aggressively approach the opponent and establish pressure. This is important for two reasons: the first is that the generally low damage output of her normals means that Chiho will generally fare worse in a careful footsie game compared to most other characters; the second is that the reward Chiho gets from her pressure is high, since Hien Geki gives her combos exceptional corner carry.
Offense
The corner is where the real fun begins -- not only do you have access to all of your other mixup options, but you also gain access to a very annoying pressure sequence of dashing HP xx 214LP , which you're free to change the timing of in order to bait reversals or guard cancels, as well as your terrifying (and exceptionally meter-efficient) Zanei Jin combos.
Zanei Jin Pressure
Due to the nature of the shadows attached to Zanei Jin, Chiho is able to set up unblockables in the corner by activating Zanei Jin after scoring a knockdown, timing j.LK so that the shadows hit meaty, and then following up with 2LK. You can use this to make waking up an incredibly scary proposition for your opponent, but you'll need to properly adjust for the opponent's wakeup timing, as well as whether or not they choose to quick getup.
Another common option is also to sneak in her LP+HP overhead during Zanei Jin blockstrings or even as a reset during combos, though this is liable to get blown up by 0F reversals if your opponent is expecting (or praying) for a gap they can mash in.
Defense
If you find yourself on the defensive, look for opportunities to wall jump away from the opponent, or try to land EX Hien Geki if you're comfortable spending the meter. EX Hien Geki becomes exceptionally important when dealing with the opponent's throws, because Chiho's jump startup lacks any throw invulnerability, making her exceptionally vulnerable to meaty throws and throw resets.
Matchups
To come.
