I took a shot at figuring out what Marisa is saying here, but I was never much good and now I'm out of practice so I didn't do very well. Here's what I got:
Marisa (had?) a gold badge! Mister hat is very lonely. Something about fragrant mister hair? Let's take it reeeally easy! Let's sing an easy song! I can share a room with easy Mister Dog! I put Mister Poo Poo in Mister Toilet! You can munch munch any Mister Food (its probably more like "I'll munch munch any Mister Food you can offer," i.e. not picky)! Please! Let's take it easy together!
It's really weird that her owner abandon her even though she's a gold-badged. And anon say she had a hat despite there is no hat in the picture.
If she did something worth being abandoned, well, her owner wouldn't give it a cardboard and write that board telling others to pick her up and she's a gold pet (except for that one guy in one of boshiherondasu's story, the story about pet koReimu got abandoned, about 8 or 9 chapters in "Onee-san" pools). Even then, this chance is so slim, almost the one I mention before is the only pool depicted a nice owner like that.
If the owner somehow cannot support its life, this is even weirder. Yukkuri can eat almost all of the organic things, and this thing is even a gold-badged, so it wouldn't choose or refuse not to eat the food it didn't like. Even then, they could sell it, back to the shop they bought, to some others, or so abuser that bizarre enough to aim for gold pet with good behavior than those rotten ubiquitous stray. This is include in the scenario that they dont want to raise it anymore, or Marisa got raped and the owner didn't want to keep "dirty" pet.
Or maybe, just maybe, she did something not worth being punished but worth being abandoned (like breaking one of the owner's favorite vase for example), so they decided: that's enough, and kicked this thing out. But because this one is a gold pet, so they decided to at least prepare for her. Although this chance is also small, partly because she's a gold one, she knew what right or wrong and knew how to apologize. If this thing was a silver-bronze and the owner is really nice, this scenario much more likely to happend.
Likely, what happened was our Marisa was purchased by an abyuser. The abyuser got their fun out of them, then simply kicked them to the curb like this, sign included, and probably was even watching to see what happens; just to record the misery and how other people will react.
Why else would Marisa's hair still be there so neatly piled?
I heard a voice singing "Easy days~" tearfully.
I thought it was interesting for somehow, so I walked to the source of the voice and found an abandoned ex-pet yukkuri just as expected. Surprisingly she's a golden badge.
She seemed to be selling herself with reasons like "She herself is a golden badge" and waiting for the new breeder's arrival at the place she was abandoned.
Golden badges might be the more intelligent individuals among yukkuris.
However, she looked a bit disturbing.
If she is a golden badge, then I want to make sure whether she really qualifies it.
That being said, her hat seemed to be shabby and all her hair had been pulled off.
She will definitely be picked up by someone else who is gentle and caring.Maricha ish Mishter Gowden Badge!
Awthough hew Mishter Hwat ish tattew-tattewed and hew haiw is gone-gone, she can really chade id eajy!
Can ashlo shing eajy shongz!
Will lwet Msihter Owner chade id eajy!
Can ashlo dwo Mishter Poo-poo in Mishter Toiwet!
Will muncsh-muncsh Mishter Fwood, no mattew what it ish!
Let'ch cahde id eajy togethew, pleashe!This Marisa-chan is a golden badge.
Please pick her up.