The turmoil of earthquakes, rampant diseases, and an everlasting winter shook the world when Kasumi Arai was a mere six years old. Amidst this devastation, an abandoned stationery store became the only haven for the young girl. Here, she filled the void by doodling the animated persona of Miracle Momo with an array of vividly colored pens.
Years later, a man, longing for the past, revisits his family's old store and stumbles upon Kasumi's artwork. Moved by nostalgia, he sketches the same character, and his work triggers an unlikely exchange of correspondence between the two.