Niu Masahito was the founder of the Conspiracy of Twenty-One.
He resembled strongly Lady Niu but had his smaller then her having inherited his father's height, as he was not taller then a teenage boy. His body showed signs of rigorous physical training: broad shoulders, clearly defined muscles in his neck and in the parts of his arms and chest not covered by his kimono.
He had a slightly stiff gait and he needed to use both hands to position his right leg when sitting down.
|Sano clan||Sano Ichirō • Reiko • Masahiro • Akiko • Etsuko • Sano Shutarō|
|Yangisawa clan||Yanagisawa Yoshiyasu • Lady Yanagisawa • Yoritomo • Kikuko • Yoshisato|
|Hirata clan||Hirata • Midori • Taeko • Tatsuo • Chiyoko|
|Tokugawa clan||Tokugawa Tsunayoshi • Ienobu|
|Niu clan||Niu Masamune • Lady Niu • Niu Masahito • Niu Yukiko|