Mr. Plankton (2024)

Hae Jo, ostracized due to his unknown parentage, sets out to find his real father after life-changing news. Jo Jae Mi, longing for a family, joins him despite being engaged to Eo Heung, heir to the Eo family's food company. Pressured to marry by a false pregnancy claim, Jae Mi vanishes with Hae Jo on her wedding day, just before the ceremony. (Source: MyDramaList)