Gyeolhon Jangsa

Bianca de Arno was a ruthless countess in the Kingdom of Sevran, infamous for being a wicked and selfish wife. While her husband, Count Zachary de Arno, bravely risked his life out on the battlefield, she sat at home and spent his money. It wasn’t until her final day that Bianca realized the error of her ways. Before she dies, Bianca prays for a second chance, swearing she will do better, and wakes up in her 19-year-old body. With her second chance, Bianca starts to see everything in a new light… starting with her husband.
(Source: Tapas)
Note: chapter count includes 46 side stories.