Monochrome. Grey. Dull. Long after a faithful incident, a boy named Itsuki was cursed to never understand what it meant to feel normal; to feel happiness, hate and love like anyone else. However, all of this changed when a certain girl entered his life, giving color and emotion to everything around him. As he ventured to the new world she brought around him, the remnants of the past made it difficult for him to bear. Will he be able to accept reality as it is or will he go back to the past where he came from?