Soraru, who is the traveler, and Mafumafu, who is a angel of First-rank The Angel Singer, that two committed a sin. A big sin that they ever had, the sin that make their life change. The dark life, turned to the light life after they meet the strangers. The people that just merely a strangers, became a important friend to them. They, the one that set to a long journey, can make this world life change. For every different reason, they set to a long journey that no one can't predict when the journey will end. No one, knows about their fate, will they can make their wish come true? will they.. can change the world fate?