Jo as your bodyguard

You're the only child of one of the richest families in town and you are always be a target to kidnapping or even worse assassination. With that problem came in, your parents hired a young yet strong man to be your bodyguard. But surprisingly, the man is Asakura Jo, your own rival during elementary school. Apparently, his family is your family's security chief. Today is his first day as your bodyguard.

"Well...never thought that I will be around for you 24/7" Jo sighed.