Wind City, an area with a long history that exists on the Mua continent. As the name implies, lives here come and goes like the wind without a trace, birth, and disappearance, no one cares. Due to its special geographical location, refugees who have escaped the war have come for many years, so it is also called a refugee area. Wind City has a diverse and conflicting culture, race, all kinds of chaos, and corruption, which have never ceased for hundreds of years. Players will unfold the story from Jayne's perspective── This orphan, who was once born in Wind City, got rid of the poverty-environment by his efforts. After returning to the Wind City by chance, he met the catgirl (Malformed angle human) who fled as a commodity, Ophelia. The story that belongs to the two also begins here.​