- Name: Scarlet Secret Technique: Sphere of Ssu Ling (緋色の秘密のテクニック球思リンの, Shinku Higi: Han'i no Ssu Ling; Simply nicknamed "Ssu Ling")
- Type: Scarlet Secret Techniques; Kyūseijutsu; Offensive
- Rank: S
- User: Seireitou Kawahiru
Named after the four spiritual creatures of Chinese myth, Seireitou forms a powerful golden sphere of chakra in his palm. It is similar to the Rasengan, but with several streams of silver chakra spiraling around the sphere. Ssu Ling can then be further compressed giving the sphere more power.
The compacted nature and moving speed of the chakra allows the Ssu Ling to grind into whatever it comes in contact with, inflicting major damage. This also tends to launch the target backward once hit. It can also be thrown, something unlike that of the Rasengan. Seireitou was able to perform this jutsu as a mid-range projectile technique by somehow throwing it into a wall. It's power varies depending on how much chakra is put into the Ssu Ling. The size as well can change from a rasengan-sized orb to a large boulder-sized orb. This was shown when Seireitou created clones that each held large boulder-sized Ssu Ling.