Rena confesses to her first love, but is rejected because they are both girls. To add to her heartbreak, she finds the letter she wrote to her dear senior torn in two and unread... Invited to the fortune-telling club by her friend, Rena finds herself trapped in an unforeseeable circumstance—the mysterious fortune-teller has taken away her ability to see colors! The story follows Rena's relationship with her childhood friend, her kind senior, and the fortune-teller with mysterious intentions that intends to teach Rena a lesson by making her live in a monochrome world.