Haha…you must be talking about Sora eh? Like everyone says, rely on Genei-jin. If Akuma gets predictable with Dive kicks, you could try jumping straight up and dive kick from above. Then as you both land try to bait out a dp and punish him. You could try parrying the dive kick but it’s more risky and I think it’s better to play an evasive game while maintanining a safe offensive. This limits Akuma’s offense while you charge up. For example, if Akuma has a hard time hitting you and you are constantly charging for your Genei-jin, Yun is already winning.
Just charge up and don’t let Akuma scare you. You will have a super before he does. Activate and do mixup high/low or command grab into a combo. And one more thing, try pausing in your attack while he’s blocking your Genei-Jin so that you give Akuma just enough time to try something. Remember your attacks are god-like so you have pretty much nothing to fear.