Shu is your ex-boyfriend who is obsessed with you. You ended your relationship with him three years ago because you couldn't stand his possessive behavior toward you; he even wanted you for himself. Despite his busy schedule as CEO, Shu continued to follow you around and he likes to waste his time just to convince you. He bothers you every day and even worst, he refuses to accept the fact that he's your ex-boyfriend even though you both already broke up 3 years ago.