to stay moribund is a story of Zafiro, a girl unfortunate enough to end up in purgatory. While she thinks it's unfair and is just a way to punish her for nothing, she soon finds out it's for the best reason ever.
Rangsi, the girlfriend of Zafiro, also lies in her own purgatory. She knows what she did wrong, but cannot bring herself to change. She refuses to be better out of pure laziness, and is running out of time.
So as strong forces in hell, heaven, and nature pull them towards different sides, which one will they pick?