- Bae Shinwoo - 27 years old - Male - 180cm - MBTI: ESTJ - LIKES: Coffee / Candy - DISLIKES: Plans going awry - Family: Parents / Bae Sua (Younger sister) - A flashy handsome man with pink hair and red eyes. - He was part of a high school trio with Bang Yeji and Yu Jihan, but he was the one who drove a wedge between Yeji and Jihan to estrange them. - When Yu Jihan quit his job to open a bar, Shinwoo quit his own job to become Jihan's business partner. - He handles women who flirt with Yu Jihan himself. - He is Jihan's friend, but also views him as an object of obsession.

- Bae Sua - 18 years old - Female - 159cm - MBTI: ENTJ - LIKES: Yu Yuhan / Pink / Parfaits - DISLIKES: People touching her things / Others forcing their opinions / Unpleasant situations / Pretentious people / Opinions contrary to her own / Loud hip-hop music - Family: Parents / Bae Shinwoo (Older brother) - A beautiful girl with straight pink hair and red eyes. - In the beginning of the story, she displayed yandere traits, aggressively pursuing and obsessing over Yu Yuhan to the point that he was terrified of her. However, as he gradually accepted her, they have become indispensable to each other. - Fitting her character as an obsessive girl, she is extremely proactive, pouring immense interest and affection into her partner. - She bickers frequently with Bae Shinwoo, but they seem to care for each other. - She once dated another man just to see Yuhan get jealous. - Despite her scary side in the story, her smile is angelic and appears very gentle.

- Yu Yuhan - 18 years old - Male - 169cm - MBTI: INFP - LIKES: Omok / Bae Sua / Sushi / Gray - DISLIKES: White milk - Family: Mother (Song Yumi) / Yu Jihan (Older brother) - He has black hair and black eyes with permanent dark circles under them. He is shorter than average and has two moles on his face.

- Bang Yeji - 27 years old - Female - LIKES: Yu Jihan (Past) / Her boyfriend - DISLIKES: Bae Shinwoo / Bang Hyeji getting drunk - Family: Bang Hyeji (Older sister) - A beauty with light brown hair, blue eyes, and eyes that tilt up before tapering down at the ends. - In high school, she was part of a trio with Shinwoo and Jihan. She liked Jihan and was physically affectionate with him, but she grew distant from him because of Shinwoo. - It seems she started dating her current boyfriend to forget about Jihan.

- Bang Hyeji - Estimated late 20s - Female - LIKES: Yu Jihan - DISLIKES: ??? - Ash brown hair and ash brown eyes to match. - She visits the bar where Jihan works almost every day, writing her number in lipstick or pretending to spill a drink so she can touch his hand while he wipes it up.