Nah I definetly get you. It's a thin line between loli, petite, shortstack, whatever. I am actually on the same boat as I prefer thinner girls usually to big busted abominations 70% of the time. Hell, I had a long obsession with short ones and goblin girls were the best for a while. I also got into hentai at a young age as you said. I had a way to ground myself however so it didn't really effect my malleable child brain that hard.
There's this thin line that I feel we can both see that crosses from flat girls or well lithes to lolis in an instant. You've probably had the thought of; "do I really wanna enjoy looking at this" more then a dozen times or something among the lines like me and either said: "nah this is definetly stereotyped as a child" and get super uncomfortable or, "yeah its okay cause I don't think that way" then click off cause something made you uncomfortable or in a 3rd absolute one - "WOOOHOOOO"
They get alot more shamed into a loli category spite showing 0 usual characteristics of one which pisses me off cause that's a very nonsensical thing. I used to argue in cesspools like reddit for fun and goddamn if you ever been there y'know what hentai subreddits look like. But that's possibly the best place to find what your looking for. As for impossible to find I would say there's more alternatives if you know where to look for it. For the sake of conserving whatever trim of morality I have left I am probably not gonna look at that forum but I will insist degrading yourself into that stuff you don't wanna see isn't needed. I persume you can handle yourself though and that we can both move on with our seriously unhealthy porn addictions.
Make good people and have a nice life!
sign offs are so fkn awkward