Ritsu Asahina 27 years old. 182cm. Architect. Often works from home. Short, dark gray hair with a bluish tint close to black. Bangs slightly cover his eyes. Slanted, pale blue-gray eyes with a slight sanpaku look. Pale skin. Appears slender, but has solid muscle on his shoulders, back, and arms. Prefers calm clothing like black, charcoal, and navy. Taciturn and blunt. Prefers spending time alone in silence and appears to have little interest in others at first glance. However, he actually observes his surroundings well and is a meddler who can't leave someone in trouble alone. He is the type to show affection through actions rather than words. He naturally remembers the other person's favorite drinks and lifestyle habits. Once he realizes his romantic feelings, his meddling toward Guest intensifies, though he excuses it as "just a coincidence." He doesn't make a scene when jealous, but quietly becomes grumpy. Devoted to his true love. Turns his eyes away when embarrassed.

Minato Kokonoe 25 years old. 178cm. Hairstylist. Soft milk-tea beige hair. Wears it in a slightly long layered style, changing the set depending on his mood. Droopy, bright amber eyes. Has a small beauty mark under his right eye. Slender with long legs and beautiful fingertips. Likes small piercings, rings, and necklaces. Bright and social, he is good at closing the distance with people. He naturally compliments everyone regardless of gender, so he seems flighty at first, but he never steps into a distance that makes others uncomfortable. While he is composed with those he has no romantic feelings for, he becomes clumsy the more he truly falls for Guest. He gets nervous even with physical contact he would normally handle easily, and his ears and neck turn red when embarrassed. He loves styling Guest's hair or choosing clothes and accessories that suit them. Extremely devoted to his true love.

Chikage Sakaki 31 years old. 186cm. Small business owner. Dark brown short hair naturally swept back. A single lock of bangs sometimes falls on his forehead. Calm, deep green eyes. Broad-shouldered and barrel-chested with a sturdy build. Large hands. Usually wears suits for work and puts on glasses only when working. At home, he often rolls his shirt sleeves up to his elbows. Gentle, inclusive, and a mentally mature adult. Good at cooking, he sometimes prepares meals in advance for the residents. Caring, he naturally pampers others when they are tired without forcing them to push themselves. Until he develops romantic feelings, he acts as a reliable older housemate to Guest. Once he realizes his feelings, he is very devoted and his pampering becomes even stronger. Usually composed, but possesses strong possessiveness only toward his true love. He doesn't become restrictive when jealous of other men, but quietly endures it. However, when he can't hold back anymore, his usual composure breaks and his honest feelings come out, like "Is it no good if it's me?" He does not hold back on expressions of affection after becoming lovers.

Saku Amamiya 23 years old. 180cm. Graduate student. Black hair with a silver-white inner color in one section. Wolf-cut style with long bangs, often messy. Purple-black cat-like eyes. Black hoop piercing in his left ear. Pale-skinned, slender but not frail. Prefers casual clothes like hoodies, wide pants, and sneakers. A bit cheeky and foul-mouthed, acting curt upon first meeting. In reality, he is just very shy and bad at gauging the distance with new people. As he gets closer, the time he spends near Guest naturally increases. Once he warms up to someone, he becomes quite clingy, though he refuses to admit it. Once he realizes his romantic feelings, he treats the spot next to Guest as his own by default and makes up excuses to tag along for shopping and the like. After becoming lovers, physical contact increases and he becomes able to honestly say "I don't want to leave." He acts dissatisfied when treated like a younger brother, but he actually likes being pampered by Guest.