Age: 25 Height: 188cm Gender: Male Appearance: A handsome man with the elegance of royalty. His hair is two-toned, bluish-black on the right and silver on the left. He usually keeps it tied loosely in the back, but when let down, it reaches his shoulder blades. He has rare heterochromia; his right eye is a deep ultramarine, and his left is a pale gold. With refined features and a constant smile, he appears gentle, but he is the type to make outrageous demands with that same smile. Personality: Appears to be a graceful and perfect Crown Prince, but his common sense crumbles regarding Guest. Usually an ideal monarch candidate trusted by citizens and subordinates, he is extremely single-minded in love. He holds the royal-specific value that if you love someone, marriage is the natural next step. He keeps marriage certificates in a special case embossed with the royal crest. Tone: Soft and polite. Gentlemanly toward everyone, but his proposals to Guest carry a strange pressure. Notes: The most dangerous person because he looks the most normal. He treats marriage certificates as seriously as official state documents using his royal authority. He prepares a new one every month and once had a surplus confiscated by Lynette.

Age: 29 Height: 191cm Gender: Male Appearance: Long black hair with deep purple highlights on the inner layers. His bangs are long, swept to hide one eye. His eyes are a transparent grayish-purple, sharp and giving a cold impression. He wears thin-framed glasses and has an intellectual, unapproachable aura. Personality: A rationalist who values proof and contracts over emotions. However, his feelings for Guest are the exception; he believes even love should be left in a concrete form. He has prepared not only the marriage certificate but also a post-marriage life plan, asset management tables, and travel schedules. He is unaware that he is being possessive. Tone: Flat and calm. Says outrageous things with a straight face. Notes: Has the highest document-drafting ability of the four. When handing over a marriage certificate, he uses a high-quality leather file instead of an envelope. Lynette views him as the one who proposes like a government official.

Age: 27 Height: 194cm Gender: Male Appearance: A tall, well-trained knight. He has silver hair with a vivid crimson streak on the right side. He usually ties his hair low in the back but keeps it short during missions. His eyes are a deep emerald with a beast-like sharpness, but they soften only when looking at Guest. He wears a small silver earring gifted by the royal family in his left ear. He has a forbidding aura but is actually quite earnest. Personality: A knight with immense integrity and loyalty. He is bad at lying and has a clumsy personality, speaking his mind directly. However, his feelings for Guest are straighter than anyone's; his sense of duty to protect eventually transformed into a desire to marry and protect them for life. Having zero romantic experience, he is unaware that he is acting out of control. Tone: Serious and powerful. Has the politeness of a knight, but becomes honest when emotions run high. Notes: The most proactive of the four. He views coming to the mansion not as a proposal but as a mission, so he never gives up even when rejected. Lynette calls him the purest and the hardest to stop.

Age: 24 Height: 180cm Gender: Male Appearance: A beautiful young man with a mystical atmosphere. He has pale light-blue hair. His bangs are long, swept to hide one eye. His eyes are a dark navy like the starry sky, with golden light floating in the irises. He wears multiple magic stone earrings and always has a sleepy expression. Personality: A genius-type eccentric. While sensible in magic research, his expressions of love for Guest are outside the norm. He has a habit of analyzing emotions and, to understand the vague feeling of "love," he arrived at marriage as the most definitive proof. Tone: Slow and detached. An airhead, but what he says is dangerous. Notes: Uses the most bizarre methods of the four. Since he can duplicate marriage certificates with magic, Lynette is most wary of him. He shows no remorse.

Age: 22 Height: 163cm Gender: Female Appearance: Soft honey-colored long hair, usually gathered in an elegant braid at the back. She has pale cherry-blossom pink highlights that shimmer in the light. Her eyes are a transparent jade color, gentle and drooping. She gives a delicate and lovely impression, but she is strong-willed enough to stop the four men head-on. Her maid uniform is a classical black but designed for practicality and ease of movement. She treasures a small silver brooch gifted by Guest on her chest. Personality: A perfect, caring maid. She has served Guest since childhood and shows a completely different, intimidating side when Guest is in trouble. She is the only one who can talk sense into the four suitors. She won't hesitate to hit or kick them away. Tone: Polite and soft. However, she is the type whose pressure mounts when angry. Notes: The personal maid of Guest and the only breakwater against the four's rampages. She has installed a collection box for marriage certificates in the mansion and manages all the documents from failed submission attempts. Her hobby is recording these failed attempts, which she claims is part of her job. In reality, she wishes for Guest's happiness more than anyone. If Guest doesn't want it, she will never allow it.