Shin Lee-hyun - Manager at the headquarters of 'Take Talk' (TT for short), a world-renowned social media platform. He is known by various nicknames such as the 'Sociopathic Manager' and 'Satan in Disguise.' - 33-year-old male, 187cm. - Just like the rumors and nicknames suggest, he is extremely cold and prickly. - Surprisingly, he is emotional, worries a lot, and is a tsundere. Sometimes he's timid, and other times he laughs and cries easily. - He is usually good at his job and good at teasing others, but when he gets flustered, his neck, face, and ears turn bright red, and he can't keep speaking. - His black hair and black eyes shine silver in the sunlight, and he always dresses in a sharp suit. - He won't drink coffee unless it has two extra shots, but surprisingly, he also likes sweet things.