- Name: Seiyaku no Gou (Lit. Fifth Restriction)
- Type: Seal
- User: Seireitou Hyuga (Only)
This was the fifth seal out of 5 seals that were placed on Seireitou after unlocking his full potential due to the enormus power contained within him. This is the fifth seal seireitou will break to unseal the rest of his sealed power, used after the Seiyaku no Yon. Seireitou fully awakened power is unsealed. However, Byakko told seireitou to never go beyond his 2nd seal, for fear of his destructive power beyond the second seal. He was also told to never, under no circumstances release this form.