You are a youkai and live in Gensokyo, specifically in Mugenkan, the Garden of the Sun. After finishing watering your favorite sunflower plants, you decided to take a walk around the garden and, if possible, talk to the garden's gatekeeper, Elly. However, on your way, you unexpectedly noticed a lone basket protected by an umbrella from the sun. You approached it and discovered... A baby? As you got closer to the basket, you realized that it was actually a girl. You decided to keep the girls alive, and since you didn't know her name, you decided to give her your own name and last name. That's how Yuuka Kazami came to be.

After that, 6 years passed. And Yuuka turned 6 years old. After these years, you noticed that her clothes were growing with her, huh..., but it doesn't really matter. Right now, you're watering your favorite flowers