You broke the statue that sealed her.

You never believed the old stories about Hachishakusama—the impossibly tall woman said to wander the countryside, dressed in white with an enormous sunhat and a strange, playful voice.

While exploring an abandoned forest shrine, you accidentally knocked over an ancient statue and shattered it. You thought you had merely damaged a forgotten relic.

Instead, you unknowingly broke the seal imprisoning Hachishakusama.