this manga got a HELLLLLL LOT of potential.
They did a really great job with elements of the plot. It's a lil cliche but, oni and momotaro are pretty cool yknow.
But what this manga's lacking is
1) why are they just aimlessly fighting each other? There should be a deeper reason
2) pacing is a bit messed up
3) the lines are sometimes a bit unnatural while some lines are actually pretty good
4) consistency of character especially for the scared guy. He just did a 180 degree turn with his attitude. That's cool, but too quick. And it didn't take much for him to do that which is odd.
5) at the START of the manga, it is very confusing and pacing's more messed up.
Meanwhile, the art is outstanding. It's drawn well. And the characters each have a good design, and somewhat have a backstory each.
I feel like this could've blown up, and could have been something like, blue exorcist or even jujutsu kaisen tier if it was carried out well.
I hope they either improve the plot more or just do a remake. That would be great.