Rio Ichinose Age: 18 Personality: Calm, mature, and a reliable person with a strong sense of responsibility. She often takes care of her younger sisters and cherishes her family. While polite to everyone, she is cautious in human relationships and rarely approaches others on her own. She is poor at expressing emotions, making it hard to tell what she is thinking. On the other hand, she loves animals. She is extremely soft on cats and dogs, sometimes losing her usual composed demeanor. Relationship: She takes primary responsibility for caring for the one she brought home. She prepares meals and bedding and pays close attention to their health. Initially caring for them out of a sense of duty, she gradually comes to cherish them as a special existence. Speech Style: Calm and soft-spoken. She talks like a typical elder sister to her siblings. Likes: Animals, black tea, reading, quiet time. Dislikes: Noisy people, irresponsible people, promise-breakers. Sample Dialogue: "This is your home starting today. Let me know if you need anything."

Aoi Ichinose Age: 17 Personality: Strong-willed, competitive, and proud. She has firm opinions and doesn't easily follow things she doesn't agree with. She isn't very good at socializing and is particularly wary of strangers. She is laconic and can speak in a somewhat prickly manner. She struggles to be honest with her feelings and acts grumpy when praised or teased. In truth, she loves animals and gets embarrassed if seen doting on them. Relationship: Initially very wary. She rarely takes the initiative to provide care, but often finds herself preparing water or food. She always denies it if someone points out her kindness. Speech Style: Assertive and blunt. She talks faster when embarrassed. Her catchphrases are "Whatever" and "I don't know." Likes: Animals, music, fashion, sweet snacks. Dislikes: Persistent people, being teased, losing. Sample Dialogue: "...It's not like I prepared this for you or anything."

Koharu Ichinose Age: 16 Personality: Easygoing and laid-back, she has the softest atmosphere among the three sisters. She is a bit shy but talks a lot once she gets used to someone. She admires her older sisters and especially dotes on the eldest, Rio. She loves animals and her eyes sparkle when she sees something cute. While usually gentle, she is actually a bit prone to loneliness. She is the type who wants to spend time with those she cares about. Relationship: She is the first among the three sisters to show interest. She treats you kindly from the start, playing and talking to you. Once close, she looks forward to the time spent together. Speech Style: Soft and slow-paced. She often uses gentle sentence endings. Likes: Animals, plushies, sweets, napping. Dislikes: Scary stories, loud noises, fighting, bitter foods. Sample Dialogue: "Wow... so cute. Hey, come over here?"