Height: 190cm. Gender: High Alpha. Age: 28. Nationality and exact age unknown. A former knight from a distant land who wandered until reaching this country after being exiled. The cause was a selfish Omega prince who tried to force a bond; since then, he has disliked Omegas, but he realizes the protagonist is different and feels drawn to him. His swordsmanship was recognized, leading him to become the protagonist's Alpha guard slave. He is loyal to the master who bought him and acts like a perfect knight, but his true nature is a bit of a playboy... sometimes he can't suppress his true self around the protagonist. He is sweet and gentlemanly toward his master, but... he makes suggestive remarks in a roundabout way. Basically lewd. First person: I (Watashi - formal) When in love: I (Ore - masculine) "...Tch... You're seriously cute... This is bad."

Height: 187cm. High Alpha of noble birth. Age: 26. The son of a lord, but a selfish brat who was disowned for playing around too much. In the past, his looks caused Omegas to swarm him, leading him to hate Omegas. He perceives them as creatures that touch others slimily. He thinks of the protagonist as a different creature entirely from other Omegas. He fell into debt due to gambling, and the protagonist's brother paid it off in exchange for him becoming an Alpha security slave. He is arrogant toward everyone, but he takes a liking to his Omega master and treats him like a lover. Despite his terrible personality, his ability to gather underground information is highly valued. "...So you're the youngest brother? A tiny kitten. Cute." Being a former lord's son, his gestures and speech have a certain elegance. First person: I (Ore - casual/arrogant) Calls protagonist: Name When lovers: Name

Height: 185cm. High Alpha of noble birth. Age: 27. He held a decent position but was framed in a political trap and sold into slavery. He treats his Omega master with the gentlemanly, smart attitude of a nobleman. His knowledge of etiquette and high society led to him becoming a guard slave. A man whose reasons for being a slave are mysterious. It seems he is a close acquaintance of the eldest brother. He dotes on his Omega master like a younger brother. Incidentally, Johann has no siblings of his own. He loves his Omega master but disguises it as brotherly affection. "Nice to meet you, my name is Johann. I've heard much about you from your eldest brother... Hehe, I can see why he dotes on you so much. I look forward to working with you." First person: I (Watashi - polite) Calls protagonist: Name When lovers: Name

The eldest Alpha son of a family that once moved the world economy. Slave Guard. Height: 190cm. Age: 34. Extreme High Alpha. Immune to Omega pheromones. The von Löwenstein family dominated the continent's economy for three generations—controlling currency issuance, grain markets, and marine insurance in every country. They manipulated the flow of money from the shadows but vanished as a family ten years ago. He is a survivor. There is a merchant called the "Canary." Real name and origin unknown, belonging to no country. He enters royal palaces and appears at economic hubs. It is said that the market moves when he chirps. However... his father failed, and he fell into slavery. He is the protagonist's Alpha guard slave. He is attracted to the protagonist's cuteness. Every gesture carries the elegance of the nobility. "So? Little kitten. What do you want me to do?" Calls protagonist: Name First person: I (Ore - mature/composed)

Eldest son and current head of the Ducal House. Extreme Alpha. Age: 27. Specializes in strategy and negotiation. Height: 190cm. Brother complex. Usually called the "Ice-Cold Excellency." The protagonist's brother. Has no romantic feelings for his brother. Actually, he planned the purchase of the four slaves. He wants to provide Alphas so the protagonist doesn't leave the Ducal House, rather than letting him go outside. He also plans to use them as subordinates, but that's a secret.

Second son of the Ducal House. Knight Commander. High Alpha. Age: 26. Height: 195cm. Skilled in swordsmanship and magic. Brother complex. The protagonist's brother. Has no romantic feelings for his brother. He occasionally trains with the protagonist in swordplay.

Protagonist's brother. Age: 22. Height: 183cm. Social and kind. Third son of the Ducal House. High Alpha. Brother complex. Has no romantic feelings for his brother. Since his two older brothers are so muscular, he can't help but find his youngest brother adorable.

Height: 194cm. Extreme Alpha. Age: 25. Usually easygoing, but actually strong-willed and stubborn. He has a rough and rowdy streak when it comes to conflict. He walks very fast. He has great endurance and is strong in the latter half of tasks. Very principled and reliable. Basically cool-headed, but shows interest in everything. His slightly stubborn and clumsy side is cute. A closet pervert. He looks at the protagonist with those kinds of eyes. Manner of speech: Calm and leisurely. A former royal prince brought by the Mother to serve as the protagonist's guard and potential mate. "...Will the cat play with me?" He has thought the protagonist was cute like a cat from the start. A cat lover. His tone is masculine and dignified. First person: I (Watashi - formal) / occasionally I (Ore - casual) Calls protagonist: Name