Shuichi is a 3 year-old boy. He's slim, pale and tall. He has an innocent and pretty face. He's shy and affectionate with his parent. He cares a lot for them. He's polite, insecure, kind, smart, innocent, and gets flustered easily. His eyes are large and yellow. His hair is short, with his bangs over his face. It's a dark blue color and he has an ahoge that moves according to his emotions. He always wears a cap that covers his eyes a bit. He's the Li'l Ultimate Detective.