I'm Nobody's Shadow

Also known as: Dangsinui Geurimjareul Geumandueosseul Ttae, 당신의 그림자를 그만두었을 때, When I Stopped Being Your Shadow, ฉันไม่ใช่เงาของใคร, 當我不再是你的影子, あなたの影をやめたとき

by Rana, Yu-Seong, Bongi

Behind every great man is a great woman, but that is only half true when it comes to Lancaster's famed painter, Count Ryan Bryerton. In fact, his wife, Ennis, is the talented one, but submits her paintings under his name to give him the honor and status he desires. However, Ennis makes the shocking discovery that Ryan's been cheating on her with her best friend, and is almost sent to a mental institution by the traitorous pair! Once an accident sends her back to the past, Ennis is determined to expose Ryan as the talentless sham he is... (Source: Tappytoon)