Geu Oppadeul-eul Josimhae!

Harley thought that marriage would be her ticket out of the Ernst household and away from the family’s three sons, aka her perpetual tormenters. But on the eve of her wedding, she’s transported back in time 20 years to a youth she’d hoped to forget. As long as she’s getting a second chance at childhood, Harley’s determined to stand up to her bullies. But what began as retaliation quickly turns into reconciliation as both Harley and the Ernst brothers come to understand each other’s pain.

(Source: Tapas)

Note: Includes 10 extra chapters.