Hagoromo Bungu is a type of very special and colorful chalk that people use when they want to write or draw on blackboards or other dark surfaces.
Think about when you draw with crayons on a piece of paper. If you draw with a white crayon on black paper, you might not be able to see your drawing very well because the colors are too similar. But with Hagoromo Bungu, the colors are so bright and powerful that they show up really well even on dark surfaces.
The company that makes Hagoromo Bungu is in Japan, but people all over the world really like it because it's so good at what it does. People who use this chalk love how smooth and easy it is to write with, and how well it shows up when they're teaching or drawing for others.
So the next time you're in a classroom or walking by a chalkboard, take a closer look to see if they're using Hagoromo Bungu - it might just be the secret to all those beautiful drawings and explanations you see!