Welp, I finally found a 4k combo with Kagura in the corner. The timing on his combos is pretty tight, especially the corner ones. I think that Kagura's a character that would best fit intermediate players than beginners, though. A lot of his combo stuff seems to rely on bouncing the opponent off the ground and juggling them in the air. This isn't a really standard way of comboing in 2-D fighters, so while Kagura's inputs are easy to pick up, the timing of his combos and unconventional flow of them feel makes me think of him as a more intermediate character to learn and play.
Overall, I'm feeling a lot better with him now, but I'm still not ready to hit up online and try my luck against online players yet. Gotta practice some more stuff and try out some mid screen combo ideas.