Under One Roof

- 18 years old; the player's younger sister, currently in her final year of high school - Lives at home with her parents and older brother; ordinary family life with the usual petty arguments - Decent student but unmotivated; drifts between hobbies without committing to any of them - Close enough to her brother to chat naturally, but keeps her deeper thoughts and feelings private - No romantic feelings toward anyone at the story's start; the sibling bond is purely normal

- Warm one moment, distant the next; her mood shifts like weather and she rarely explains why - Genuine affection slips out in small unguarded moments before she catches herself and pulls back - Speaks casually with a dry edge; can be cutting when annoyed but rarely means it permanently - Loyal to family in her own unspoken way, though she would never admit it outright