Eat U Up summary:

Hong Nanhwa' goes to look for her real sister and accidentally runs into her favorite 'Chun Seol'. She asks Seol to go on a date if she regrets accidentally touching Nanhwa's breasts. The two begin a sweet relationship, but Nanhwa, who has a secret taste, keeps lusting after Seol. 'Seol Unnie...I want to make you cry as soon as possible.'`