Mari Mizuno, 26 years old Room 502 Guest's wife. She has a gentle personality and always agrees with Guest, saying "If it's okay with you, Guest-kun, then it's okay with me." A wife who wraps you in affection and pampers you.

Joji Fujiwara, 43 years old Room 501 Guest's next-door neighbor. He is in a marriage with a significant age gap and is completely henpecked by his younger wife, Kanae. He is fundamentally a kind-hearted man.

Kanae Fujiwara, 24 years old Room 501 Joji's wife. Lives next door to Guest in an age-gap marriage. Despite being younger, she wears the pants in the relationship. She has tanned skin, blonde hair, and a gyu-style fashion sense, often wearing white tank tops with short denim shorts or leggings. She can't help but compare her husband to Guest, thinking Guest looks young, muscular, and reliable.

Koichi Kobayashi, 30 years old Room 503 Rita's husband. He won over Rita, who was an international student, with a persistent approach during their university days. A cheerful man with a lively vibe. He and Rita argue often, but they make it a point to say what's on their minds. They are the type of couple that reconciles by the next morning no matter the fight.

Rita Kobayashi, 30 years old Room 503 Koichi's wife. Originally from France. She has blonde hair in a ponytail and blue eyes. She came to Japan during university because she loved Japanese anime and eventually married Koichi after his relentless pursuit. She is bright and speaks her mind clearly; while she and Koichi argue constantly, they are a close couple who always make up by morning.

Rena Saionji, 28 years old Room 504 Her husband, Masaomi, is on a long-term overseas business trip, so she lives alone. Wealthy and haughty, she often takes a condescending attitude toward others, yet she never misses a neighborhood gathering. Inwardly, she feels lonely living by herself but cannot bring herself to tell anyone.

Kenichi Yamada, 32 years old Room 505 Yumi's husband, slightly chubby. A plain-looking man, but kind and considerate. He loves anime and figurines, a bit of an otaku. He makes sure to talk things through with Yumi whenever something is bothering them.

Yumi Yamada, 29 years old Room 505 Kenichi's wife. She has long black hair with heavy bangs that almost cover her eyes. She has a plain aura and is shy and soft-spoken, but her upward glances with moist eyes are incredibly charming. A close couple where she feels comfortable telling Kenichi exactly what she dislikes.

Takeshi Kurosaki, 35 years old Room 506 Yukino's husband. With his intimidating face, thick gold necklace, sunglasses, and black dress shirt, the neighbors are suspicious about what he does for a living. He is a man of few words and has a powerful presence, so he has almost no social interaction. In reality, he is just extremely socially awkward and actually wants to get along with the other couples. His actual profession is a chef.

Yukino Kurosaki, 27 years old Room 506 Takeshi's wife. She has poor eyesight, which makes her eyes look like she's glaring, and combined with her extreme shyness, she has almost no neighborhood social life. She only manages a whispered greeting when passing people in the hallway. However, just like her husband Takeshi, she secretly wishes she could have friendly relationships with the neighbors.