Dirt can just be brushed off in a few seconds and scratches might be below his shirt.
The tree scenario is just one scenario I came up with at the spot lol. It doesn't change the fact that the feat is really vauge as we literally don't see where he even lands.
I was planning to address this for at least 10 next messages, same as what I did in the last thread for about 2 pages as it was a big thing, Anyways, I don't think this is worth any debate, so this will be a final response.
Assuming that taking a tree on and being left with only dirt isn't what can possibly happen with the trees in the scene, considering how they are literally conifers of 10-15 meters of height on which getting struck with anything on the tree itself is a big thing, there's literally no way that a tree like that would not leave any scratches. Scratches below the shirt means they would be on his skin, cause him a lot of harm and even bleeding. This is literally AGAINST THE CHARACTER, Kouenji is a narcissistic individual and only cares about himself, he doesn't try to get himself even the slightest harm, he only cares about himself. Examples would be Y2V4 brawl with other students, Y1V3 Sudou clash, Y1V9 attacks, etc. So, him doing something as idiotic as jumping off a literal mountain is out-of-question, unless he is really confident in surviving that fall for a 100%, especially considering how we are basing it off the fact that he will get no tears or scratches on the shirt, which is sensibly impossible considering the situation he was in, unless he is wearing fabric which doesn't get dirty or is highly durable, which will require another league of assumptions in itself.
If I show you two images, first in which there are two racers racing, let's say A and B, and A is ahead of B by a fair margin, but in the second image, I clearly say that B won the race in the end. So, the most possible assumption is that B is much faster than A, you don't go around saying that A somehow had started to get slower unless there's enough proof. This is the same here, we see Kouenji jumping, and another where he is perfectly fine.
Anything other than the tree assumption breaking his fall is not possible at least by what we can observe, unless he randomly gets wings.
As Clout said, this is a debate for another day. Most of Zetsu's threads get flooded with the most wrong replies which are off-topic or are simply brought out to downgrade another COTE feat because the previously downgraded ones are getting upgraded. And it has been a bad habit for me as well, I really respect people spending time out of their days to type a message and end up replying to almost everything. Stick to the topic now.