Gen Fu's H+K launches both low and mid wake up kicks. This leads into his blender or a full damage juggle. The timing is strict in that you have to commit to it as soon as they start getting up off the ground. This means you can't see if they will wake up kick or just get up and block. If they do block, H+K is punishable by 12f throws, so using it in this way is really risky. If you've conditioned an opponent to just get up and block, you can do a lot of stuff like 214t, 236t, 44p, etc to open them up again on wake up.