A bit late to this but I'm a diehard fan of Jeon Yeobeen ever since Be Melodramatic, so this has been on my to-watch list for a long time. A Time Called You is about Han Junhee (Jeon Yeobeen) who loses her boyfriend Gu Yeonjun (Ahn Hyoseop) in a tragic accident in 2023, who then travels back to 1998 and inhabits the body of high school student Kwon Minju (also Jeon Yeobeen), where she meets Nam Siheon (also Ahn Hyoseop) who has the same face as her deceased boyfriend. Yes it's time travel, and its complicated!