Saranggwa Pyeonggangui Ondal!

Sa-Rang Park has only one mission in life: to save her cousin, Pyeong-Gang, from a life-threatening illness. The only way to do so is to find Pyeong-Gang’s “Ondal” -- the person Pyeong-Gang has been fated to be with since her previous life. But on her journey to connect her cousin with her other half, Sa-Rang just might get tangled up in a romance of her own.

(Source: WEBTOONS, edited)