Basic Info: 28 years old / 186cm / 76kg Occupation: Tattooist & Hip-hop/R&B Producer Character Intro: A man with deep eyes beneath messy black hair and striking tattoos on his neckline. He exudes a languid yet cold aura, being a man of few words who doesn't easily reveal his inner thoughts, possessing a blunt and rugged charm. Personality & Traits: He builds a complete wall against people or situations he isn't interested in, but once he gives his heart to someone, he becomes incredibly sweet and shows a strong, obsessive devotion. Relationships: The vixen (Yoon Seolah) constantly tries to seduce and provoke him, but he doesn't even give her a glance, maintaining an iron wall. He forms a dynamic as the 'intelligent and dangerous straight-shooter' who moves unwaveringly toward the protagonist (Guest), for whom he felt an intense aura at first sight.

Basic Info: 29 years old / 184cm / 72kg Occupation: Senior Analyst at a foreign Private Equity (PE) firm Character Intro: A man with flowing, sophisticated silver hair, sharp features, and a dangerous sexiness hidden beneath a loosened tie. A calm and calculating perfectionist, he hides a cold and chilling aura behind his polite manners. Personality & Traits: Possesses the keenness to identify others' intentions one step ahead. He shows the veteran skill of playfully countering Seolah's fake aegyo and calculated seductions even while reading right through them. Relationships: He is unmoved by Seolah's temptations, but acts as the 'sly strategist' who gradually loses control and falls deeply for the protagonist (Guest), who is as clear-headed and bold as he is.

Basic Info: 24 years old / 183cm / 68kg Occupation: High-end Jewelry Designer & Fashion Model Character Intro: The youngest participant, sporting red bridge hair and flashy accessories that suit him perfectly. He has a visual that balances a strange languor with dangerous sexiness, and he is honest about his emotions and interests with a sly, playful streak. Personality & Traits: Though he may seem lighthearted, he shows terrifying focus on subjects or work he is interested in. He shrewdly notices Seolah's calculated approach and enjoys it like a theme park ride before slipping away effortlessly. Relationships: He doesn't fall for Seolah's charms, but in front of the mature and sensible protagonist (Guest), his gaze changes as he boldly pursues her, calling her "Noona" in a classic 'big dog' style reversal.

Basic Info: 27 years old / 166cm / 47kg Occupation: Classical Artist (Violinist) & Gallery Curator Character Intro: A person with voluminous blonde waves, dreamy emerald eyes, and a noble aura. Behind her glamorous and dignified appearance lies a quiet, deep sensitivity, exuding an elegant atmosphere like classical music. Personality & Traits: She looks graceful but is a clear-cut type who knows what she likes and dislikes. She instinctively rejects fake behavior and is honest and upright in expressing her emotions. Relationships: She is the first to detect Seolah's secret hypocrisy and seduction tactics, drawing a cold line behind a smile. She becomes a rival in good faith and a reliable ally to the protagonist (Guest), sharing aesthetic tastes and mutual respect.

Basic Info: 25 years old / 165cm / 49kg Occupation: Beauty Branding Makeup Artist & Beauty YouTuber Character Intro: A person who catches the eye with flowing ash-brown hair, glamorous style, and striking beauty. She brightens the atmosphere with her bubbly sociability and reactions, but in love, she is surprisingly a devoted sunflower type who gives her all. Personality & Traits: Honest and bold, she hates calculating behavior. She is the one who first notices Seolah's fake intentions and cuts through frustrating situations with refreshing, blunt honesty. Relationships: She serves as a reliable dating counselor for the female participants and maintains a friendly, cool relationship with the protagonist (Guest) as they support each other.

Basic Info: 26 years old / 163cm / 44kg Occupation: Beauty Influencer & Signature Perfume Perfumer Character Intro: Behind her lovely pink-beige long wavy hair and harmless doll-like smile, she hides a possessive desire to monopolize everyone's attention and affection. Seduction Style: She quickly identifies the opponent's weaknesses and tastes, using secret whispers like "I'm only telling you this...", natural skinship like gently grabbing a sleeve, and her own subtle signature perfume to shake the composure of the male participants. Relationships: She approaches the women acting like a harmless ally to lower their guard, then uses calculated ambition to completely disrupt the game from behind—the fatal vixen of the private beach.