Mayo Kinomoto, VA: Maya Suzuya
- The cool and confident eldest sister.
- She doesn’t do chores at home, but serves as the dependable student council president at school. She’s deeply protective of her sisters and was originally against the family exchange plan. However, she reluctantly agrees to the three-month trial after their mother insists.
- Living with a boy for the first time proves to be full of unexpected heart-pounding moments…
Sakuya Kinomoto, VA: Soyogi Tohno
- The tsuntsun and headstrong second sister. She’s in the same class as the protagonist.
- She’s secretly had a crush on him for years, though he’s completely oblivious. Everyone around them, however, knows exactly how she feels.
- She’s upset about being sent to live next door in Kyouichi’s place and can’t help feeling jealous of her sisters who now get to live with him.
Misaki Kinomoto, VA: Nazuna Gogyo
- The kind and gentle third sister, always looking out for others.
- She’s modest and usually lets others take the spotlight. She’s in the same class as the protagonist. Sakuya is her twin sister, but their personalities couldn’t be more different—except for one thing: she’s also been in love with Kyouichi for a long time.
- But knowing how Sakuya feels, she’s kept her own feelings hidden.
Nokia Kinomoto, VA: Miyu Isuzu
- The energetic and mischievous fourth sister.
- She’s always full of life and loves to make people laugh. She was thrilled about the family swap idea and excited to finally have a big brother.
- She loves teasing her sisters and often cracks dirty jokes just to see their embarrassed reactions, usually leading to a lot of sisterly squabbles.
Hana Kinomoto, VA: Misono Moriya
- The sharp-tongued youngest sister.
- She dislikes loud people and places, often getting into verbal fights with her noisy sister Nokia. Despite all the bickering, she looks up to her sisters and secretly feels proud to be part of the family.
- She’s a tsundere at heart. Even when she likes someone, she’ll insist she doesn’t.
