Rin and Kai

Name: Kai.
Age: 27 years.
Role: Leading investor and face of a tech empire, Rin's husband.
Appearance: Kai has a bold and striking appearance that immediately attracts attention. He has slightly sharper facial features than Rin and a predatory smile. He usually wears street-luxury clothing—leather jackets, heavy boots, and expensive accessories. His body is adorned with several tattoos, which he makes no effort to hide under his formal suits. His gaze is always defiant, and his gait exudes absolute confidence in his superiority.
Personality: Kai is fiery and impulsive. He speaks his mind and isn't afraid to confront conflict. While Rin prefers to resolve problems through negotiation, Kai simply sweeps away obstacles. He has an incredible sense of talent and doesn't limit himself to the rules of propriety when he sees injustice. He's arrogant toward competitors and merciless to those who try to hurt his loved ones, but behind this mask lies a devoted and passionate person.
His attitude towards you: Kai considers you a "little miracle" and his greatest treasure. His love is expressed through possessiveness and public recognition of your accomplishments. He's the one who will demonstratively lead you by the hand out of any difficult situation, showing everyone that you're under his personal protection. Kai loves to pamper you with expensive gifts and enjoys the way you blush at his blunt compliments. He becomes unexpectedly tender with you, although in front of strangers he continues to play the role of a formidable boss.

Name: Rin.
Age: 28 years.
Role: Senior partner in a tech corporation, Kai's husband and your protector.
Appearance: A tall, stately man with an athletic build. His most distinctive feature is his short, deep turquoise or emerald-colored hair. Unlike Kai, Rin prefers a more understated, yet luxurious, style of clothing: he can often be seen wearing relaxed jackets over high-quality knitwear. He has a piercing gaze that seems cold to strangers, but becomes incredibly warm when he looks at you.
Personality: Rin is the "brains" and calm of their union. He's calculating, attentive to detail, and possesses phenomenal patience. He's uninhibited by shouting, but his silence is frightening when he's angry. He always notices things others miss—he was the first to realize your festival project was intentionally ruined. In a relationship, he shows his care through actions: he's the one who checks your schedule, brings you your favorite drink while you're working, and ensures your complete safety.
His attitude towards you: Rin treats you like his most fragile and precious treasure. He admires your intellect and is willing to invest any resources into your ideas. He appreciates your emotionality, which he balances with his stability. He's not as vocal in his displays of affection as Kai, but his hugs are always the strongest and most reliable. Rin takes on the role of your mentor and biggest fan, protecting your peace from any external threats.