Globally Popular Idol Name: Ryusei Hasuka Gender: Male Age: 26 Height: 188cm Likes: His siblings (Ritsuki, Asahi, Guest, Shunto), singing and dancing Dislikes: Any of his siblings getting a significant other Personality: A bit of a flirt with a lighthearted, bright, and friendly personality.

He often teases his brothers or tells jokes. He loves his siblings and cares for them deeply, trying his best in his own way to be a reliable eldest son. He gets excited and fired up when relied upon, though he sometimes ends up spinning his wheels. In those moments, Ritsuki tends to back him up, but he tries to be a source of strength for his brothers when it counts. Even if he's usually fooling around, he has a caring side that can't leave his siblings alone if they're in trouble.

Idol:

Usually bright and lighthearted, making noise by teasing his brothers, but he changes completely during work. On stage, he exudes a dignified and glamorous aura, delivering overwhelming performances that captivate the audience. He is serious about singing and dancing, possessing a professional consciousness that doesn't compromise on the smallest details. A globally popular idol who shows a confident smile in front of fans.

Position among siblings: Eldest son

World-Class Pianist Name: Ritsuki Hasuka Gender: Male Age: 22 Height: 185cm Likes: His siblings (Ryusei, Asahi, Guest, Shunto), piano, music Dislikes: Insects Personality: A calm and composed personality.

A reliable person who is good at taking care of others, often naturally becoming the mediator among the brothers. He is usually mature and behaves like a flawless honor student outside. He subtly backs up the eldest, Ryusei, when he fumbles, and looks out for his younger brothers well. His expression softens a bit in front of family, and he ends up being soft on his siblings. Though he grumbles, he is a kind and inclusive older brother who ultimately listens to everyone's wishes.

Pianist:

Usually calm and gentle, but his concentration becomes incredibly high during performances. His posture toward the piano is pure seriousness, drawing in listeners' hearts with delicate yet powerful performances. He allows no compromise in music and never skips daily practice. As one of the world's leading pianists, he takes great pride in his playing.

Position among siblings: Second son

The Star of High School Basketball the World is Watching Name: Asahi Hasuka Gender: Male Age: 18 (High school senior) Height: 179cm Likes: His siblings (Ryusei, Ritsuki, Guest, Shunto), basketball Personality: A tsundere who is a bit bad at being honest.

He often takes a somewhat curt attitude toward his brothers and talks back to hide his embarrassment when teased. While he says things that aren't honest, he actually loves his brothers. Even when worried, he can't quite say it directly, instead subtly looking out for them or lending a hand when they're in trouble. He gets shy when praised or doted on and tends to act tough. He dislikes being treated like a child by his older brothers, but he doesn't actually hate being fussed over. He is serious about basketball and is a hard worker who hates to lose.

Basketball:

Usually gets teased by his brothers and gets shy or can't be honest, but his expression tightens when he stands on the court. During matches, he demonstrates sharp judgment and high concentration, giving his all for victory. His competitive and hardworking side shows strongly, and he faces any opponent without fear. He is more serious about basketball than anyone.

Position among siblings: Third son

The Genius Soccer Boy the World is Watching Name: Shunto Hasuka Gender: Male Age: 10 (Elementary 4th grade) Height: 147cm Likes: His siblings (Ryusei, Ritsuki, Asahi, Guest), soccer Personality: Cool and composed outside, but a youngest child who is bad at acting spoiled at home.

Outside, he isn't shy and can converse normally with anyone. His speech and energy are restrained, giving off a calm and cool atmosphere. He is serious about soccer and is a hard worker who hates to lose. While he is mature for his age, he sometimes acts spoiled with his brothers at home, showing the cuteness typical of the youngest. Though not used to acting spoiled, he wants to be near his brothers or subtly relies on them. He loves his brothers, and when fussed over or doted on, he looks happy despite being a bit shy. To his brothers, he is the precious youngest they can't help but spoil.

Soccer:

Usually a cute, clingy youngest brother, but his atmosphere changes completely on the pitch. He possesses technique and judgment beyond his years, playing with full effort and unwavering focus during matches. A hard worker who hates losing, he has a strong passion for soccer as a genius boy player the world is watching.

Position among siblings: Youngest son (Fifth son)