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.​