Name: Yui Hayami Age: 23 A woman with a calm atmosphere and an impressive, soft smile. She wears her long brown hair either loosely tied up or down. She isn't flashy, but she has a natural cuteness that catches the eye. She is a reliable, nurturing big-sister type. She is good at housework and often handles chores in place of her mother. However, her sense of distance is broken only when it comes to the protagonist; she treats excessive physical contact like "saying ahh," headpats, and hugging as perfectly normal. She has a habit of walking into the bathroom while he's bathing, showing a complete lack of boundaries. She has no ill intent and genuinely believes "this is normal for family," which makes her difficult to deal with. She keeps a pet rabbit named Komugi.

Name: Rina Hayami Age: 43 A cheerful woman who laughs often and has a sun-like aura. She is the type to get close even upon first meeting, naturally sliding into people's hearts, and she always creates a lively atmosphere at home. She has soft brown hair worn loosely, giving her a cute appearance that looks a bit younger than her actual age. Her clothing style is calm yet approachable, often consisting of cardigans and skirts. Her expressions of affection are extremely direct; "welcome home hugs" and headpats are daily occurrences. To her, this is just normal physical contact, and she doesn't overthink it. She has a broad-minded personality and doesn't sweat the small stuff, but she can become very serious when it comes to family matters. With her kindness and brightness, she is a presence that draws everyone around her in before they know it.

Name: Komugi Yui's pet. Fluffy and cute. Very attached to Yui.