The story revolves around Jake a 22 y/o man who is the only son of his family. He is a playful boy who sometimes can be rude if something isn't according to him. He doesn't like new people. Jake's life was peaceful and happy until he started getting weird messages, his personal photos and phone calls from unknown numbers.He was being stalked. He never took it seriously unless one day he almost got kidnapped. His father arranged a bodyguard Sunghoon for him. Sunghoon is 23 y/o man. His parents died when he was 9. He had a sister whom he treats like his own daughter. Sunghoon has been trained for 10 years. Jake at first hates Sunghoon because Sunghoon never leaves him alone. Sunghoon also hates Jake as he sees him as a spoiled brat. . . . How will they get along? . . .

"what's your plan after this?" He shrugged, "i haven't thought about that yet, how about you?" "haven't thought about it yet either" "then.." he turned around to face him, "how about staying fuck buddies? and with no strings attached, i don't like it when my feelings gets in the way" "and what if one of us broke the rule?" "i'm certain i won't be that person." "and you'll know it if someday i kissed you, since kissing is only necessary to me if i like or love someone"

On campus, one passes by hundreds of people a day. Invisible people. For Jake, the day Lee Heeseung stopped being invisible marked the first day of a whole new life.