I don't know If someone said this, but . . .
I think I discovered something useful
It works Midscreen and Corner (in corner overall).
In a combo when the opponent is knocked, after a 5C do a 2C > jc > slightly delayed j.C. Basically the j.C is meaty but unlike 2D, they don't have too much time to think and when both are falling, Terumi can keep the pressure or even do mixups. It works without a problem if they air tech (no matter which direction), but if they wait until they touch the ground to tech, our options get a bit tricky:
1. Forward tech: it can be punished with 5B and 2B (only 2B on Mdiscreen).
2. Backward tech: it can be punished with 5B, 2B, 5C and 2C (only 2B on Mdiscreen).
3. Quick wake-up: use Terumi's fast options to do another combo (5/2A, 5/2B), or bait.
4. Neutral tech: I don't really know what to do in this situation, maybe mixups?
Note: if they air tech and you hit them, depending on the height you finish with j.2D or link a 2B to do a usual corner combo (obviosly shorttening the combo at the end). I don't know if the 2B works in Midscreen.