Shy and lonely college junior Do-Rae Lee never expects to see her high school crush again until she runs into Hae-Won Cha, who’s just as handsome as she remembers. When Hae-Won suddenly confesses his feelings, Do-Rae is completely thrown off. Because one, he already has a popular girlfriend who happens to be Do-rae’s friend, and two, he believes he’s still eighteen years old. After a car accident erased five years of his memories, Hae-Won is stuck in the past and determined to make Do-Rae his girlfriend. Now the two are confronted by the question: Can first love survive reality?

(Source: WEBTOON)