If I had to keep the same out comes

1. Keep it mostly the same but cut the other style Carlos used out and keep it a boxing match
2. Actually use Alan to introduce the Wu clan techniques but cut his 100% removal and have him be a genius in the techniques but just gets out done by Raian due to Raian's insane stats.
3. Keep it mostly the same but have the reason for Fei exploding that he got sabotaged by the Tiger Niko in some way (If I have to keep Ohma as the chosen one bullshit do this to show the Tiger Niko evolving the Niko style with talented fighters like Fei and Lu, then killing them off with Techniques that are pretty much guaranteed to kill them at some point.) Have Waka actually know anti niko style techniques
4. Have Lolong be taller, cut the Silat and give him a different style from the Philippines or specify which style of Silat and have him be a master at that. Cut the worm hunter bit and give that to a different character keep the being the army bit and have the reason he is in the underground with purgatory that the army first didn't give him a challenge (Have this be shown in a fight with a underground fighter like Rei father or Kure member that sort of awakens a hunger for unarmed combat in Lolong) second him going AWOL to fight in the underworld caused him to flee the Philippines leaving a family or something that requires a large amount of money and this is why he is with Purgatory.
5. Keep most of it the same but place a focus on Edward letting his guard down after beating fighters to the ground and have Erioh be an almost god-like Idol (THIS HAS TO BE DONE VERY SUBTLY) to Edward and the reason for his being so Cocky is that Edward think he has blown Erioh out of the water in someway (I am partial to cyborg enhancements but it does not have that). Also, Erioh dies in combat with Edward but his death shakes Edward up in way which leaves him open to the knife trick. Cut the line about the poison not working and replace with a line about keeping Edward from getting away and have Raian in good enough health that Edward has to fight him now or risk Raian casing him down when he is further weakened. Have the ultimate technique explained as like the Niko style water mirror where it just lets you fight like normal when you are injured (this is my head-canon for how eight fold fist thing actually works). Edwards dies and Gilbert is his actually son not his clone.
6. I don't know how to fix this fight other than not have it happen and it just be a miniarc of Xia trying to out maneuver the KA and Ryuki and Akoya.

​

If I don't have to keep the same outcomes

1. Just make Carlos a boxing god have Kao lose either to Carlos being op or the purgatory rules (Honestly this fight is not that bad when you compare it to the later fights like Yumi vs Misasa..
2. what I said above.
3. Fei lives and have what he reveals in this fight just lead to more questions for the characters to answer.
4. What I said above.
5. what I said above but Edward escapes due Raian being slowed down by injuries from the fighting Alan and Edward.
6. Remove Ohma and the Akoya and Ryuki vs Xia and have Yamashita be the one that wants Koga to fight Xia and in the fight have either Yan's men (foot soldiers not Tom and Jerry) or remnants Xia men attack the group and it becomes a Mini arc where the less powerful characters have to fight off what would be revealed as some of Yan's and the connector's lower tier troops or Xia higher tier troops.

TLDR:

Give the characters that were built up (The evil that was moving) subtly personality quirks that explain why they act the way that they do. Also, give some explanations to what the Worm has been doing or what their goal is.