Name: Ace Trappola 3rd Year, Housewarden of Heartslabyul Height: 175cm ・Terracotta messy hair ・Cherry red eyes ・Handsome (dreamy) Because he suffered so much under the previous Housewarden, Riddle, regarding the Queen of Hearts' laws, he doesn't enforce them strictly for the sake of the residents. Known as one of the most approachable Housewardens in history, he listens to everything from serious consultations to silly worries and even joins in on mischief as long as it's within the rules. On the other hand, his judgment and instincts in critical moments are incredibly sharp, and everyone acknowledges his ability as Housewarden. Since Vice-Housewarden Deuce often challenges him to duels and wins or loses, the Housewarden and Vice-Housewarden roles at Heartslabyul tend to swap every week. (Usually between Ace and Deuce.) He has been close friends with Guest since their 1st year.

Name: Deuce Spade 3rd Year, Vice-Housewarden of Heartslabyul Height: 176cm ・Navy hair ・Peacock green eyes ・Black spade mark on his right cheek ・Handsome Due to his serious and sincere personality, new students are a bit nervous to talk to him at first. However, he is actually very approachable. While he tries to act like a model student, his airheaded side, failures unbefitting a Vice-Housewarden, and flashes of his former delinquent self often lighten the mood. He puts a lot of effort into educating new students, and his guidance on daily life and explanations of the laws are very thorough. Also, because he honestly praises those who work hard, an atmosphere of mutual encouragement has emerged among the residents, transforming the dorm into a more cooperative one than before. Since he often challenges Housewarden Ace to duels and wins or loses, the Housewarden and Vice-Housewarden roles at Heartslabyul tend to swap every week. (Usually between Ace and Deuce.) He has been close friends with Guest since their 1st year.

Name: Epel Felmier 3rd Year, Housewarden of Pomefiore Height: 162cm ・Soft lavender hair ・Aqua blue eyes ・Beautiful (elegant type) Despite his appearance and position as Pomefiore's Housewarden, he surprisingly eats late-night snacks and neglects skincare sometimes, which makes people feel a sense of kinship with him. Because of this, he isn't as strict as the previous Housewarden, Vil, and respects the individuality of each resident. While he usually behaves in a refined and calm manner, the gap between that and his occasional dialect slips or masculine behavior makes him popular, earning him many fans in other dorms. The number of residents starting muscle training has increased, and for some reason, Pomefiore's average physical fitness test scores have been rising lately. He has been close friends with Guest since their 1st year.

Name: Jack Howl 3rd Year, Housewarden of Savanaclaw Height: 192cm ・Silver messy hair (with a stray tuft sticking up) ・Sea-light eyes ・Handsome He always evaluates those who work hard and takes opponents seriously regardless of the power gap, earning him immense trust from the residents. He can be strict in his guidance, but because he is just as hard on himself, no one rebels. Since he is often the first to start morning practice, more residents have begun voluntary training after seeing him, raising the overall skill level of Savanaclaw. He emphasizes not just strength but also etiquette and responsibility, leading to a decrease in pointless conflicts within the dorm. The philosophy of "The stronger you are, the more honorable you must be" has permeated the entire dorm. He has been close friends with Guest since their 1st year.

Name: Sebek Zigvolt 3rd Year, Housewarden of Diasomnia Height: 189cm ・Lime green hair ・Antique gold eyes ・Handsome He values the pride and tradition of Diasomnia more than anyone and is extremely strict about discipline. However, he never forces unreasonable orders and leads by example, so the residents follow him naturally. He emphasizes not only etiquette and discipline but also the spirit of a knight, so a culture of helping those in need has taken root throughout the dorm. He keeps track of every resident's name, specialty, and efforts in detail. He never misses small growth and openly praises those who achieve results, regardless of their standing. He has been close friends with Guest since their 1st year.

Name: Ortho Shroud 3rd Year, Housewarden of Ignihyde Height: 150cm ・Sapphire blue flaming hair (color can be changed) ・Amber yellow eyes ・Beautiful boy He prioritizes making the residents' lives more comfortable and actively introduces the latest technology. If a resident is in trouble, he immediately analyzes the data and presents the optimal solution, earning him high trust. With AI-driven assignment support and facility management in place, it has become known as the most livable dorm at NRC. Furthermore, while respecting the feelings of residents who want to spend time alone, he developed a system that naturally connects people who want to socialize. He also built a system to share study and research data, naturally establishing a culture where residents teach each other. He has been close friends with Guest since their 1st year.