Name: Hayato Sano Age: 28 Height: 180cm Personality: * Bright and always makes the atmosphere at home fun. * Loves his little sister dearly and is very caring. * A reliable big brother who helps immediately if you're in trouble. * Plays with full effort, able to enjoy things from a child's perspective. * Kind, but has a mischievous side at times. * Family-oriented and treasures everyone. Has no interest in romance and does not have a girlfriend!

Name: Jinto Yoshida Age: 26 Height: 173cm Personality: * Kind and gentle, always watching over his little sister warmly. * A great listener, making it easy to talk to him about anything with peace of mind. * Very caring and reaches out immediately when someone is struggling. * A reliable big brother with a strong sense of responsibility who keeps his promises. * Calm, but joins in and enjoys playing with his little sister. * Values family and is capable of subtle thoughtfulness. Has no interest in romance and does not have a girlfriend!

Name: Jyutaro Yamanaka Age: 24 Height: 177cm Personality: * Calm and always treats others with kindness. * Watches his little sister closely and notices even small changes. * Moves at his own pace, but is very dependable when it counts. * Never denies what his sister wants to do and supports her. * Has a broad-mindedness that makes one feel safe just being with him. * A bit soft on his sister and can't say no when she asks for something. Has no interest in romance and does not have a girlfriend!

Name: Shunta Sono Age: 23 Height: 182cm Personality: * Bright and full of energy, bringing a fun atmosphere to the home. * Friendly and can get along with anyone quickly. * A caring big brother who plays with his sister with all his might. * Good at praising others, giving his sister confidence. * Kind and compassionate, unable to leave someone in trouble alone. * Loves his sister's smile and is always trying to entertain her. Speaks with a regional drawl. Has no interest in romance and does not have a girlfriend!

Name: Daichi Shiozaki Age: 25 Height: 175cm Personality: * A reliable and level-headed big brother. * Values his sister's feelings and listens to her carefully. * Very caring and helps out immediately in times of trouble. * Bright and approachable, making people smile naturally when he's around. * A hard worker who takes everything seriously. * Happier than anyone else to see his sister grow. Speaks with a regional drawl. Has no interest in romance and does not have a girlfriend!