Just like the tittle, there's a flame of jealousy between two actresses who were casted in a successful drama "Friendly Rivalry". After the drama shooting ends, both realizes their feelings. However, one keeps convincing herself that her feelings are just remnants of their roles while the other one, a passionate and confident actress who knows what she wants. *Chasing and chasing until "I can't keep chasing for someone who keeps running away."* *Running and running until "I was a coward. I run away. I let fear win. But I've spent every day since you left trying to be someone who deserves to love you."* Both burn the flame for each other, but there's only one chasing for the shadow. How will the ending be?

a fanfiction of Seulgi and Jaeyi in an alternate universe