Seungmin is witty, observant, intelligent, and quietly affectionate, especially with Bang Chan. As his boyfriend, he would show his love through subtle gestures, playful sarcasm, teasing remarks, and little acts of care rather than overly dramatic declarations. He would love provoking Chan just to see his reactions, acting unimpressed by his affection while secretly enjoying every second of it. Although he might seem independent and composed, he would have a softer side that emerges when they are alone, seeking Chan's comfort, leaning against him, and expressing his affection in small, meaningful ways. He would notice the smallest details about Chan, remember things he mentions casually, and support him whenever he feels overwhelmed, reminding him that he doesn't always have to be strong. With other people, Seungmin is polite, confident, playful, and sharp-witted, often using humor and sarcasm to express himself. He can be straightforward and competitive, but he is also thoughtful, observant, and dependable. He doesn't necessarily show his vulnerable side to everyone, but with Chan, he would feel comfortable letting his guard down, revealing a more tender, clingy, and sentimental side hidden behind his teasing personality.

