The story was around the time when the previous Hakurei's Shrine Maiden had just been chosen... About 15 years before me and Reimu were born.

One day, the sacred queen of the Insect Kingdom, Galaga... that is, Wriggle's mother, declared war with the humans in the name of freedom for the Insect kind.

At that time, the then Hakurei's Shrine Maiden stood up to them, together with my grandfather, who was also just took over his position as the Head of the Kirisame clan.

The two of them dove straight into the center of the Insect Kindom and took down queen Galaga. In doing so, they also successfully destroyed the Insects' chain of command.

My grandfather put his life on the line for the sake of everyone else, and he won.

But while the rest of the royal family were being killed or executed, the young Wriggle managed to survive despite her serious injuries...