With how little pics got translated so I can't say much, but here is my two-cent: All of the yukkuri appeared in this story all shithead (except for the family anon buy, because I can't read Japanese so I don't know what they said), and even anon is a troller/mental abuser.
The pet Marisa, as I have already said before, she wasn't a shithead, but not anymore, maybe because of a process of training or perhaps she was an innate nicehead, at first she didn't show any sign of being scum. But that soon changed when the anon had lots of "things" he did at her, which slowly turned her into scum. Even after she had her paste refilled (was that even her from before?) She was still being kind of a good one at first, but anon repeated what he had done, and we already know the rest.
The koReimu that he picked up: unless I miss something, this one is definitely what you would expect from a shithead. Selfishness, always prioritize easiness first. She even dared to puff at someone who just saved her freaking ass just a moment ago. But she got punished, and that's good, but the only thing I don't like is how anon killed her, way too fast and not painful enough.
The wild yukkuri family: a typical trash family that wanted comfort. Even the father didn't try to educate his children, and don't get me started about those kos. F*ck those little shit.
Edit: I re-read the pool (although still no translation), and I immediately noticed that the family price was cut down really hard, so either they are just so shitty that no one buys them so the shopkeeper had to lower the price to get rid of it or those things refresh without permission (still shitty though), but based on the stalk pregnancy, I incline toward this scenario.
I'm not sure what happens here but I suppose this anon made those yukkuri's home a grave for his dead pet Marisa, thus trolling more yukkuri as usual. This is also evidenced by the pic of his pet yukkuri he left there.
Also, is it me or the dead Marisa started to cry in the second panel she appeared despite the fact she took it easy forever?
I'm not sure what happens here but I suppose this anon made those yukkuri's home a grave for his dead pet Marisa, thus trolling more yukkuri as usual. This is also evidenced by the pic of his pet yukkuri he left there.
Also, is it me or the dead Marisa started to cry in the second panel she appeared despite the fact she took it easy forever?
Yeah I noticed that as well, and maybe, it really is a grave but looked at his action to throw Marsa corpes into that pit, I think that he just want to get rid of it and kill those fucking wild in the process, not from pitying/loving his pet, but oh well, one yukkuri two stone.
Yubyaa!
Dwaddie bwecame a mwonster nandajeee!Little ones! After poo-poo came out, go to mister house to munch-munch mister food daze!Little one! Don't vomit mister paste!Mwommie do wick-wick!
Yun?
Yubyu!Shtinks! Thish shtinksh! Obobe!After you munch-munch mister food you can play a lot daze!
Reimu! Thank you for mister food! Daze!Wanch to pway mwore daje!
Pwuff!Mishter poo-poo ish coming ouch!Fwood!Dwaddie do cwean-cweanMwunch-mwunch eajy!