- Name: Seal of Human binding
- Type: Fuuinjutsu, Short range (0-5m)
- Rank: Legendary
- Users: few Secoiya clan members
This cursed seal was created by the Secoiya clan member, Segoiya Secoiya, to try and seal creatures, even demons into human form, to be reborn even. Semoiya Secoiya, used this to seal The Slabia of Darkness, into human bonds. Using this needs an age of over 20to use it, and when using it, it takes 13 years to recharge. In Part 1, Indo Huiyo was transformed back into the Slabia of Darkness but was reverted back to his average 14 year old form when he was sealed again. This is unknown why it happened.