Gu Jin, Let's Be Good to Each Other

They say first love is the cinnabar mark buried deep in everyone’s heart, something they never want to bring up, because even mentioning it feels like a knife twisting in the heart.

Nan Yu was no different.

Ever since she and Gu Jin broke up five years ago, a cinnabar mark named “Gu Jin” had been left in Nan Yu’s heart.

Like everyone else, Nan Yu truly hoped that this cinnabar mark would never be mentioned again, that it would remain sealed away forever.

But fate seemed to delight in tormenting people, and Nan Yu still ended up meeting her “cinnabar mark” again.