Gekiga Kachikujin Yapoo

Only read this if you're into extreme femdom and justification of racial inequality

This is, from what I assume, is based on Japanese fanfic of White worship, Femdom, Racial hierarchy and the extreme subjugation of the Japanese. The "yapoo" are descendents of Japanese that are still human, still have conscious thoughts and awareness, but are forced into bizarre body modifications to suit the needs of the ruling white class.
They are turned into toilets, beds, foot stools, oral sex givers, animals and all sorts of things because they are deemed to be cattle. The in universe explaination is that they are "proven to be intelligent apes" and are related to the Neanderthal which means they aren't homo sapiens. It's fucking weird. The justification for how black slaves are still human, but "Yapoo" aren't is long and at some points there's more text than pictures.
There isnt really much of a plot, nor are the characters really characters, just devices to move along to allow greater showing of all the fucked up modifications made to the Japs.