A woman wants a drug to slowly kill her mother-in-law. An old man is terrible to his servants, even when those servants are monsters. A frog from Kyoto and a frog from Osaka visit each other's cities.
She replaced the sweaty 
futon with a new one,
Le cambió el futón
con sudor por uno nuevo
Le cambió el futón
con sudor por uno nuevo
Ela trocou o colchão suado com um novo.