Having no experience in romance, the vibrant Ninako curiously explores the meaning of what love really is, and is surprised to feel a colorful range of emotions as she grows closer to the school heartthrob, the quiet yet gentle Ren, who also happens to be involved in a longtime relationship. With every intention of keeping her head held high, Ninako prepares to face the mental pain of this one-sided love that she had allowed to take root, facing a series of trials that would either contribute to her growth as a headstrong woman, or break her as it did with other girls. However, is this really a one-sided love? Or had something been silently sown in the most hidden part of Rens heart? Volume 2 contains the side story Another Light about how Ren and Mayuka first met. Volume 5 contains the side story Unfinished Map about Ren and Andous friendship in middle school. Volume 6 contains the oneshot Colourless Dreamer, which is unrelated to the main storyline. Volume 7 contains the side story Wishing for Yesterday about Yuu and Sayuris past. Volume 10 contains a side story about Manabus love.