Free Step Dodge

Which one exactly?

best exmaple I can give you is the 13th combo challenge.

You have to be slightly more specific. Are you referring to the buffering after Chifu K?

Yea pretty much.

After the warp. Ex: 7K into Chifu K. You can literally hit H and then the K(P+K) into P. You are using the H to cancel out a certain move in there that will cause it to drop. Unless you want to adapt into putting a extra button to that. It's optional and not really needed.

Pretty much any variation with Chifu.

Yeah you can raw buffer H as well to get the button timing down. I didn't do that in the Combo challenge video..but after being in the lab, It was possible and made easier without me realizing there was a easier button to do.
http://www.freestepdodge.com/media/doa5u-phase-4-combo-challenge.5885/

I just want to start with spaming 7k and chifu combos until i have it down. buffer (H)? could you explain this sorry.

Basically you are inputting Guard/Free to stop you from hitting other motions. For example: Akira, after his 64T, You can do 2H+KP into 246P. However, there is a side step after 2H+KP, so you input H right after it to cancel the SS and inputting the raw 246P. Basically you can cancel stuff that may end up doing something else.

Oh I see so 7k into chifu (k). Then (h) then ( k) p+k into (p). Alright I'll put this into training.