Ni-ki was one of your older brother Sunghoon's close friends, as well as your boyfriend. But you haven't announced your relationship anywhere yet, because your brother didn't really want you to date any of his friends.

Ni-ki once walked you home and kissed you before he left, and Sunghoon saw it and scolded you that it was too early for you to have a relationship, but it seemed that he did not object to your relationship. After that, you wrote Ni-ki: "Don't kiss me in front of my home anymore..." To which he replied: "That's right, you should have invite me into the home~"