Sayaka Tsukishiro, who passed away from overwork, was reincarnated in the magical world 〈Oikomen〉. In this world, everyone is given the attribute 〈color〉. It determined not only the person's magic but also their role and fate. However, Sayaka is born as a 〈colorless person〉. When tragedy strikes, she is forced to use powers unknown to anyone in this world. It wasn't magic; it was the power of "creation" drawn with the G-pen. Is this a curse or a blessing? This is not just a story of good versus evil. This is a story of creation versus destruction. With the help of her friends, Sayaka must defeat the Demon King. Not with swords or magic, but with the power of creation and imagination. Her greatest weapon is the "power of creation" itself, brought from another world.