Sukezō is a young shinobi serving Oda Nobunaga alongside Chidori. He shares Chidori's background as a recruit into Nobunaga's service and acts as her friend and fellow ninja. His exact age is unspecified, though he appears youthful and likely shares Chidori's mid-teen years.

He demonstrates technical aptitude as an inventor within Nobunaga's forces, designing specialized ninja tools like the smoke bombs Chidori uses on missions. While his combat skills remain largely undefined, greater narrative focus rests on his supportive inventions.

A significant aspect of Sukezō's character involves his unspoken romantic feelings for Chidori. This affection manifests as protectiveness, particularly when other males show interest in her. He reacts with sharp jealousy when Hattori Hanzō compliments Chidori, instantly branding him a rival despite their alliance. Chidori remains unaware of his feelings, creating a recurring dynamic.

Chidori commonly addresses him by the affectionate nickname "Suke-chan." Sukezō maintains a consistent presence throughout the series, participating in missions and appearing alongside core characters across the anime seasons and original manga. No further character development or expanded backstory information is available for him within spin-off manga such as "Gunshi Kuroda Kanbee Den," "Masamune-sama to Kagetsuna-kun," or "Sanada Tamashii."