oh yeah, just saw this, gotouge as talented as she is has a hard time keeping the backround consistent, for example, in chapter 166
in this page we see koku and sanemi's clash, and
on the next page we can see the cuts. Now,
two pages later, right middle panel shows that the pillar diagonally behind Kokushibo and to the right is intact, which contradicts what's shown in the previous pages
I have more examples from that fight,later in chapter 167, we see Kokushibo launch
this attack and leave
very visible slashing patterns on the ground then, in chapter 168, we can see some of the traces of the damage (right side, second from top) that are erased on the
very same page (right side, third from top) and it's not a one time thing either, because the next time we see the ground,
it's still gone, it's still gone on then
here as well
And to follow through on that last page there, we can see Gyomei shatter the ground with his flail, two pages later, he
does so again (can also note that the ground from the first strike against Kokushibo is now unblemished) and then a few pages later, we see that the ground around Kokushibo is untouched as he
dashes forward, and that there's no sign of the damage even
behind him from Gyomei's perspective, doesn't mean that the damage was a myth, it just means gotouge has a hard time drawing a consistent backround during fights, i don't remember much but i do know the ground was fragmented, considering goutoge's track record i wouldn't really use the fact that damage just straight up disappears as an an argument