Ruyi Bang is Imu's weapon in the Senran Kagura series. It first appeared in Senran Kagura: Shinovi Versus and has appeared along with her ever since.
The staff is usually about as tall as Imu herself. It is red with a golden trim at both extremities.
The staff has the ability to freely extent and change its shape.It has has also been shown to become flexible. It also can open up to unleash an onslaught of fox shaped spirits as an attack.
- Ruyi Bang is undoubtedly based on a similar weapon belonging to the character Sun Wukong from the Chinese Classic novel Journey To The West.