Lovely Ugly

Ru-Na, aka "Croma," the self-proclaimed campus matchmaker-slash-love addict spends her time absorbed in everyone's love life but her own. But when the mysterious Na-mon Si (aka "Ci-namon"), grabs her attention thanks to a chance meeting on the train, she finds herself drawn to him, but doesn't know why. Out of this, erupts a bittersweet war for love you don't want to miss!

(Source, Tappytoon, edited)