She Exists

Kuangyang is a traveler from the east, and he takes his lover Luna with him. The purpose of the trip was to treat Luna. Luna suffers from a strange disease, and no one except Kuangyang is aware of Luna's existence. Does Luna really exist? Or is the illness actually caused by Kuangyang? Traveling thousands of miles around the world, what interesting people and things did Luna and Kuangyang encounter? Will Luna get better? Or will Kuangyang fall into greater madness?