Mikey wins.
Reasons:
- Dark Impulse (if it activates the fight is over)
- Faced stronger opponents than Ryuuen, Albert, Housen, Tsukishiro and Shiba
- Huge Stamina advantage (Ayanokouji has never came close to beating 100 men)
- Better Pain Tolerance feats
- Can't manipulate Dark Impulse Mikey who is empty inside and doesn't listen to anyone. Not even Takemichi or Draken.
- Equal amount of fighting experience with more fights under his belt
As for the dark implusive thing, I heard that Mikey takes time to enter that mode. Ayanokouji is also not intimidated by her father's gaze.
Ayano will use his fear inducement that he once used on Hirata. For combat, Ayanokouji has more than 3 martial arts that he has learnt (if I'm not mistaken there are 6 that he has learnt). This fight is speed equalised, there are a few options for that.
1. Ayano can use his pressure points to stun Mikey (
). There too, he can compensate for characters who use martial arts that rely on kicks, so it can be used against Mikey's taekwondo as well.
2. Ayano can rely on her powerful attacks, which can stun people with large bodies.
(
)
3. Ayano can keep up with characters whose fighting style is boxing (
)
4. Ayano can also target the undefended parts of Mikey's body, namely the solar plexus
5. Ayano can lock Mikey's hands, and at this point, Ayano is 100% serious. So, she will break Mikey's hand (
)
Deffensive:
Ayano can rely on his instinctive action that she used against Shiba to avoid Mikey's attacks. Even according to Ayano, Shiba is equal in strength to him.
Ayano can also rely on his martial arts to avoid Mikey's attacks as I have already provided.
FYI, Ayano in WR is trained to fight athletes so he can do martial arts, even as a child (volume 0) he was able to defeat many adults. Meanwhile, as far as I know Mikey fights against high school boys only.