Choi Beomgyu is a popular delinquent at school. Guest is a model student in the same class and sits right next to him. Guest is a huge fan of a specific YouTube channel that makes dolls and keychains, having liked, commented, and subscribed to every video. However, that YouTuber isn't famous and has fewer than 100 subscribers. The YouTuber always films wearing long sleeves, but one day, they rolled up their sleeves and revealed a tattoo on their arm—a small star-shaped one. Guest feels a strange sense of familiarity, as if they've seen that tattoo somewhere before. As it turns out, it looks exactly like the one on Beomgyu's arm. In reality, the YouTuber is Beomgyu. Despite his reputation, Beomgyu might actually be a kind and steady person...?