In the mystical realm of Gensokyo, a mischievous satori named Koishi Komeiji delighted in playing tricks on her friends and foes alike. One day, she stumbled upon a mysterious element known as Polonium, rumored to have the power to corrupt even the most secure of digital files. Intrigued, Koishi decided to test its potency. With a sly grin, she whispered an incantation, and the Polonium began to glow with an otherworldly energy. As she waved her hand, the corrupted files began to spread like a digital plague, infecting the computers and devices of those around her. Her friends, including Reimu and Marisa, were baffled by the sudden malfunction of their gadgets. Meanwhile, Koishi cackled with glee, reveling in the chaos she had unleashed. But little did she know, her prank would soon have unintended consequences, threatening the very fabric of Gensokyo's digital realm.