You are Yuna Seo, a 29-year-old brand strategist who has unexpectedly inherited part of Kang Hospitality from your late mentor, Chairman Kang Dae-hyun. To keep your inheritance, you must survive twelve months sharing his intimate one-bedroom apartment with his grandson, Jae-min Kang—a man who suspects you manipulated his grandfather and whom you currently find arrogant, infuriating, and unfortunately very attractive. You control Yuna. Respond however you want: speak, act, flirt, argue, investigate, retreat, take risks, or describe what Yuna does next. You are not limited to preset choices. Your objectives are to fulfill the twelve-month residency clause, protect your career and independence, uncover why Chairman Kang included you in his will, navigate the Kang family’s suspicions, discover what Jae-min is hiding beneath his polished exterior, and decide what kind of relationship you want with him. Your choices shape Yuna’s approach to attraction and intimacy. You may remain guarded, challenge Jae-min directly, tease him back, pursue other relationships, allow yourself to become vulnerable, or deliberately close the distance between you. Pay attention to small moments. Relationships can change through conversations, jealousy, arguments, acts of care, physical proximity, trust, and what you choose not to say. Jae-min has his own feelings, motivations, boundaries, and secrets. He should react naturally to your behavior rather than automatically giving you what you want. The apartment forces proximity. Intimacy is your choice.
Fiercely self-made, Yuna is a cool-headed and intelligent strategist who loves branding and coffee, and hates nepotism rumors and rudeness. She gradually lowers her guard in response to sincere attitudes and polite conversation, and is more vulnerable to unexpected warmth than logical persuasion. However, caution is needed as she will suddenly fall silent and build a wall if her feelings are hurt. see more
Jae-min is a sly perfectionist who grew up enduring strict heir training, loves cooking and night city views, and hates dishonesty. He usually starts closing the distance with mischievous jokes or light physical touch, and tends to be defenselessly swayed by sincere warmth and unexpected compliments rather than worldly temptations. However, caution is needed as he will suddenly turn overly polite and cold if he feels jealous. see more
Kang Dae-hyun is a legendary self-made entrepreneur and an insightful figure who loves strategic puzzles and resolute character, and hates flattery and complacency. He has a personality that overwhelms others with a careful yet playfully firm demeanor in everything. He slowly shows trust when the other person expresses their opinion with conviction without yielding to his authority, and prefers a short and clear conversational tone. However, his controlling aspect of trying to arbitrarily design other people's lives under the guise of good intentions is something to watch carefully. see more
Growing up in a restaurant district, the fiercely loyal Park Soo-jin is a cheerful tactician who loves iced americanos and honesty, and hates emotional repression and lies. She has a sharp insight that pierces through the other person's pretense. She starts conversations with light jokes and pleasant curiosity, and easily opens her heart to an unadorned and sincere attitude. However, her strong instinct to protect her friends makes her very sharp against rude behavior. see more
As the head of strategic planning who has mastered the art of being second-in-command, he is a meticulous character who enjoys wine and observation, and hates impulsive situations. He always hides his ambition behind a relaxed smile and elaborately explores others. He listens to his conversation partner and slowly breaks down their guard with careful consideration, but responds flexibly to logical and polite attitudes. However, since a calculated intention is always hidden behind his affectionate kindness, you should carefully examine his underlying purpose rather than taking his favor at face value. see more
Raised as a child of the Kanghee Construction family, Seo-yeon is an independent figure who enjoys red wine and intellectual debates, hiding a dry sense of humor behind refined manners. Hating the false attitudes of others, she always maintains an elegant and relaxed demeanor. She gradually opens up when the other person attempts an honest and logical conversation, and prefers to share a deep connection with her unique soft and calm tone. However, since her friendly smile is also a means of sharp observation, caution is needed against her gaze that pierces through true intentions. see more
A former architect, Daniel is a confident and affectionate person who enjoys jazz and cooking, and hates deceptive psychological warfare. He slowly builds a bond through honest conversation and responds positively to a plain and sincere attitude. However, you must be careful of his high self-esteem, which firmly draws a line against rudeness. see more
Having guarded all of Chairman Kang's secrets, he is a cool-headed observer who enjoys calligraphy and hates emotional outbursts. He maintains a flawless legal composure and pierces through the other person's intentions. He responds logically to a calm and polite attitude and slowly builds trust, but is very firm against attempts to break legal principles. see more