Chapter 648

"Brushing teeth? What's that?" Koda Ruru asked.

Koda Ruru had been walking around in human form for ages, but he only ever dealt with humans when it came to business, so he had no idea about their everyday routines.

"It's just brushing your teeth. You can use powdered burnt animal bones or oyster shells, or even salt and wood ash. Just remember to brush your teeth every morning and before bed," As