 With the Ryvius in turmoil, Kouji is the one who tries his best to keep the peace in a non-violent fashion, and possibly one of the very few who still retains vestiges of civilization in him.When he realized his own "cowardice"—his wanting to satisfy everyone, which made him neglect his own feelings and values—he finally brings his friends and the castaways back to civilization.At 16 years of age and a childhood friend to Kouji, Aoi has known the Aiba brothers longer than anyone outside the Aiba family and acts alternately as an older sister and a mother figure to both boys, often going out of her way to check up on them.