Original illustrations of Bowser attacking Mario, Peach and Toad’s picnic and eating all their rice balls, from an officially licensed Mario picture book from Japan.
Stolen from reddit where it wasn’t being properly appreciated
“Indigo dyeing silk thread”
In case anyone wonders what the Japanese is saying
I just learned about this recently from a Viking reenactor! Indigo dye isn’t blue until it oxidizes, so when you dye with indigo your cloth or thread doesn’t come out of the water blue, it comes out and then reacts with the oxygen in the air and seems to spontaneously turn blue in front of your eyes. It’s a really cool process to witness.