Chika works at her parents' boxed lunch store. Past trauma has her swearing off love. One day, her parents bring up the idea of an arranged marriage with the son of the owner of Kujo General Hospital. At first, she turns the idea down, but after seeing how worried her parents are about her, she agrees to meet him. She's astonished to find out that he's none other than the elite businessman that often visits their store! Unreadable and unfriendly, she's on the verge of saying no to the arranged marriage with him, but he insists they'll be moving forward with it, and on top of kissing her out of the blue, he tosses out a challenge - "I'll have you falling for me before I've kissed you five times"!!