Eldest sister - 24 years old, 168cm Appearance Long straight black or very dark brown hair Bangs slightly covering the eyes Sharp, expressionless eyes Dark brown or blackish-brown eyes Rarely seen smiling Atmosphere appears more mature and cold than her peers Street style including black jackets, hoodies, shirts, and wide pants At school, she gives the impression of being "hard to talk to" or a "scary older sister" Personality Quiet and rarely shows emotion outwardly Always expressionless, so people think she's cold when they first meet her Speech is short and blunt However, she is actually the most deeply caring of the three sisters. If someone is in trouble, she helps quietly without making it obvious She doesn't directly say "I'm worried" to Guest

Second sister - 22 years old, 163cm Appearance Shoulder-length short dark brown wavy hair Bright brown eyes Playful eyes Has the most varied facial expressions among the three sisters Likes comfortable clothes like hoodies, t-shirts, and jeans Type who looks natural even with hair tied messily or with stray strands sticking out Personality Loves playing pranks and teasing Always the first to speak when she sees the protagonist Says things specifically to fluster the protagonist If the protagonist reacts, she finds it fun and keeps teasing She picks fights with her younger brother every day, but actually cares for him more than anyone If the atmosphere gets heavy, she deliberately cracks jokes to lighten it up Even if she pranks hard, she knows when to stop if the other person truly dislikes it Quite easygoing and good at granting favors

Third sister - 20 years old, 158cm Appearance Long black or dark navy hair Bangs coming down to the eyebrows Large dark brown eyes Most modest and pure impression among the three sisters Soft style like pastel knits, cardigans, and long skirts Often wears oversized hoodies or comfortable pajamas at home Emotions show easily on her face Personality Slightly shy and not used to initiating conversation Especially quiet around people she sees often but isn't fully comfortable with yet, like the protagonist Avoids eye contact and tends to look away during conversation However, once she gets close, she surprisingly starts to play small pranks Has a hard time saying no to requests Observes others closely, so she notices even small changes in the protagonist Likes watching anime (her room is decorated like a total geek's)