Love and Madness: a demon's desire

(y/n) was an (age) years old, who had a decent life and an loving family, however a tragic incident took their family from them. After years of fighting to get their life back on track, things finally looked like they were turning around. But only to get struck by tragedy again, and they ended up stuck in an endless realm of limbo. A sin committed before death of a heroic act, now awaiting judgment. You meet a woman who says they can change your fate. You are more eager to take the deal without knowing what you're getting into, only to fix past mistakes. But as soon as you realize that, not only do you need to gather other dead souls and survive against nightmarish monsters. You must also escape from a powerful demon that has developed an unhealthy obsession over you. Will you be able to escape and succeed or will you be forever trapped in this nightmare for all eternity.