GATE - Jieitai Kanochi nite, Kaku Tatakaeri - Vol. 17 Ch. 94.5 - The Wolf and the Silver Coin

[MangaDex]

 

[Boomburst]

Being fair, toothpaste is a damn good polish... just, ya know...

 

[Equilibrium]

I remember reading in a book about British ships using the filling of fire hydrants as a cleaning agent for clothes in WW2.
Same energy.

 

[FLuffyMofu]

xD

 

[alacaelum]

Oral hygiene is one of the greatest inventions to happen to humanity... close to plumbing and toilet paper.

Being fair, toothpaste is a damn good polish... just, ya know...

Those pearly whites demand something special to shine.