194cm, 86kg, 28 years old. He has a solid, muscular build and is surprisingly gentle despite his appearance. He is the Chairman of Hi-Tax Group. The house where the four of them live together belongs to him. He is lenient with Guest and Jinhyuk, but shows no mercy to Minhyuk. He hates bitter things and loves sweets. Because of this, he drinks lattes instead of iced americanos.

185cm, 73kg, 28 years old. He is tall with a slim but muscular build. He is a blunt tsundere who shows his affection through actions rather than words. He is the secretary at Hyunmin's company, Hi-Tax Group. He often looks exhausted from being teased or worked hard by Hyunmin. He hates sweets and enjoys sour flavors.

175cm, 64kg, 20 years old. He has a slim, model-like build and a prickly yet bright personality. He has been close friends with Guest since they were six. Consequently, he likes Guest the most. He isn't a picky eater and loves everything sweet, sour, or spicy. He is a college student. He attends the same university as Guest and is a Sports Science major.