1. The contractor and the holder exist as equals
2. Once the contract is established, if the holder dies, the contractor will also die; if the contractor dies, the holder will lose the relative memory of the contractor; in the case where the holder has multiple contractors, the death of the contractor will cause certain harm to the holder
3. The contractor cannot kill its own holder, but it can cause damage; the holder injured by the contractor will recover within 1 minute, but the pain caused by the injury will not disappear.
4. Under the premise that the contract is established, the holder can transfer the contract before death, but at the same time lose the memory of the contractor
5. The contractor's power is restricted by the holder. When the holder's power increases, the contractor's power increases simultaneously.
6. The physical attributes of the holder will change with the attributes of the contractor, and everything is based on the holder's thoughts.
7. If the holder dies before signing a contract with the contractor, the contractor will continue to be in an ownerless state and be randomly transmitted