Girl without the relative, Yukiko hid revenge to mother who left oneself in Kokoro. However, mother has already left the world when Yukiko was young. The Koto which Koto, it which Yukiko can do dissolve ashes of mother with a medicine and dissolve in the world until the proof that lived. Such Yukiko corresponded with a man called Harada. The exchanges of the letter were singularities through the men called Sudo not mail. Yukiko let Naoki of the shoplifting Boy which I came across accidentally supply a medicine, and were going to put a plan into practice steadily. While she did not know it around her at the same time, a dreadful plan was going to be carried out.