What if Tenya wasn't the youngest of the Iida family, and was, instead, a twin? Introducing: Chikayo Iida, the youngest and only daughter to the Iida name, and Tenya Iida's twin sister. Chikayo may look the spitting image of her two elder brothers and share many attributes with them, she can't help but feel different from her two siblings. She prefers keeping to herself, she knows that there is in fact a time and place for everything, that input sent always the best response to someone else's actions, and that grades, though they do help in the scheme of things, aren't everything in ones schooling years (contrary to her twin's way of going about things). However, she most certainly does have a fire within her that won't go ignored when those close to her and 'right and wrong' are involved. Will any of this change when she learns that her reoccurring nightmares and a certain ill-tempered classmate with a knack for explosions are connected?