There's literally only one piece of fanfiction for Mitsuboshi Colors and I plan to change that. I do not own Mitsuboshi Colors. I only own the story idea.
If you were to visit Ueno in Tokyo, you might come across a trio of little girls. These girls are known as Sat-chan, Yui, and Kotoha and they call themselves "Colors". If you asked them what they did, they'd say that they were working to protect the town's peace from anything that would threaten it. And, by anything, I mean anything. From collecting ginkgo nuts to clear the air; to trying to take down trees to reduce hay fever. Their antics have made them popular among the locals. Mostly, everyone either likes them or just doesn't mind them. The only exception is Saito, a policeman stationed in Ueno Park. He doesn't hate them, but he does find the three rather annoying. Although, he will play with them sometimes. In any case, the Colors are well-known throughout the town. But, what's also well-known is how the three children met and formed the group Colors. It all started two years ago.