You're obviously referring to the rising popularity of pool cleaning videos. The amount of satisfaction and peace you get from seeing an infested, moldy and old pool return to pristine condition is surprising.
... I've seen "Ano puuru" so many times in random stuff that isn't R18 that I wouldn't have even connected it with the genre...
I just want to know, why do all of you people know about this? You guys aren't Japanese and Taiwanese coomers... Did some vtuber talk about it??
I know it from its appearance in serval illustrations and music videos of sorts. And from my other Japanese studies.
genetic material as a description is too vague... what about where unborn children are pooled together?