Despite all he did for Captain-commander Yamamoto, Sasakibe Chojiro never got much recognition.
It wasn't that he wasn't powerful, it was that he didn't show his power very often. But he stayed at his captain's side. Even when people called him weak and showed disrespect.
Sasakibe Chojiro was extremely loyal. Even when asked to take a captain's position, he refused. He knew that people would respect him much more, but he still refused. Sasakibe preferred to stay by his captain's side.
Sasakibe pledged to serve Captain-commander Yamamoto for the rest of his life. When he died, he didn't go out peacefully. Oh no. He fought with all of his strength to protect the man he swore loyalty to. Even when pinned against a wall and dying, Sasakibe warned Yamamoto about the dangers of the Vandenreich.
Yes, Sasakibe truly is a loyal man.