Now that we have a middle weight UFC champion in Israel Adesanya performing naruto summoning jutsus and Death Note memes in the cage.
I think we might acknowledge there could be one area anime/manga might have to contribute to MMA and martial arts. It involves eastern fictional authors investing more time and energy into researching and educating themselves on topics related to martial arts, in contrast to your average MMA or martial arts commentary/coach. Authors of the genre have a better grasp of the history of martial arts. Sometimes: insight into the science and psychology of fighting.
Below is an attempt to cite an example of this. (Originally written in japanese its read right to left, the opposite of american comics)
One character rapid fire throws kunais. Which are a japanese farmer or working class improvised shuriken or ninja star. The kunais impact on the eyes of a summoned edifice. Its a big disembodied head. Like the japanese comic version of the giant heads on easter island.
Its mentioned Itachi throws his kunais to target blind spots in a person's vision. Rendering them unblockable/undodgable. Decent life hacks.
So what does targeting blind spots in a person's vision mean?
I think its represented to a degree by the image below.
When focusing on a black dot. You'll notice other dots on the periphery of vision become less visible. Or disappear.
This could depict blind spots in vision, of which we are not usually aware exist.
In theory, it might be possible to note where a person's eyes are focused. And plot a path for a punch/kick/elbow/knee that skirts along the blind spots in their vision. To guarantee they never see it coming.
In manga/anime characters like Itachi have special eye abilities which automatically calculate distance/speed/geometry to make it feasible. For normal people it could be completely impossible and not worth bothering with.
I hope this gives people an impression of how there might always be room for growth and improvement in MMA and martial arts in general.
There will never be anyone in MMA or martial arts who has all the answers and knows everything. And sometimes in those gaps of knowledge there could be useful things people never really thought of.