Merikuron no Namida

Under what conditions would a person feel compelled to produce a clone with the ability to replicate all their memories flawlessly, so that the clone is utterly oblivious to being a replica? Nanako previously accepted Louie's suggestion to make a precise mirror image of herself, and she now remains close to him, observing the remarkable clones he generates. Besides the tales of the people he rescues, who is this man who functions as a god, and what motivates him to do so?