anko2868: Keeping a Young Marisa
子まりさを飼う by Tsurezure-aki
Summary by platina:
A Miss buys her first pet yukkuri. The young Marisa just can’t learn to use the toilet, so when Miss removes the yukkurarium floor mat to clean it, she replaces it with sandpaper of increasing grades of roughness, telling Marisa that the floor is angry because Marisa keeps pooping on it. Marisa is unrepentant and keeps trying to punish mean mister floor, even if she’s the one who ends up gets hurt. Finally, Miss gives up and puts in a layer of dirt instead of flooring, but having been awakened to the joys of yukkuri abuse, she also buries some flower-arranging spikes in the dirt.