My favorite is the "akaname", a youkai that licks the filth of uncleaned bathrooms leaving the place clean. However its saliva is poisonous and so if you don't

My favorite is the "akaname", a youkai that licks the filth of uncleaned bathrooms leaving the place clean. However its saliva is poisonous and so if you don't clean your bathroom properly, you can succumb to sickness. https://en.wikipedia.org/wiki/Akaname https://en.wikipedia.org/wiki/Akaname