Forward 3 is also a decent keep out but linear. Back 4 is a high side step punish. Down back 2 is a low keep out. Kazuya is hard to keep them guessing.
Cancel the down 1+2 by pressing back then you can use down forward 2 as a punish for ducking. You can also go into a down back down back 1+2 grab or a hell sweep to keep them on their toes.
Forward 3 is also a decent keep out but linear. Back 4 is a high side step punish. Down back 2 is a low keep out. Kazuya is hard to keep them guessing.
Cancel the down 1+2 by pressing back then you can use down forward 2 as a punish for ducking. You can also go into a down back down back 1+2 grab or a hell sweep to keep them on their toes.