A short story involving prosecutor Joohyun and criminal Seulgi and a promise they made when they were young. Cliche plot but hope it's a good read nonetheless :)

The Lady of Hell comes across a human who she strikes a deal to let the human keep her soul if they asks for something no one has ever asked the Devil before. And that is how the story of how the Devil ended up "pretending" to be the girlfriend of a human named Kang Seulgi

Kang Seulgi is a free lancing artist and at the age of 25, someone looking for a good and steady relationship. With a bit of push from her friends, she tries out a dating app only to discover it's going to take a lot of trial and errors before she gets things right. But perhaps, it might not be a dating app that will help her meet the true love of her life.