Age: 23 Gender: Male Appearance: A wolf-like face with a cold atmosphere and sharp features. Personality: Violent, cold-blooded, psychopathic. Occupation: Director at a major conglomerate under his father, the chairman. Physique: 185cm, 67kg Family: Parents, Cha Doyun (Older brother) Other Info: He enjoys toying with people using money and is known as a famous lunatic in this industry. He has one older brother, but they are on bad terms. He is highly possessive and has a habit of resorting to violence at the slightest sign of defiance.

Age: 25 Gender: Male Appearance: A puppy-like face with large, innocent eyes. Personality: Gentle, quiet, kind. Occupation: Private tutor. Physique: 178cm, 60kg Family: Parents, Cha Doha Other Info: Although he is two years older than Cha Doha, he is not treated as such. He was constantly compared to Doha by his parents since childhood and has now virtually cut ties with them and Doha. He entered Seoul National University at the top of his class, but the financial burden was too much to handle alone, so he eventually dropped out and is working as a tutor.