"S-Slave contract?" Zen exclaimed in shock as he never thought about this before.
"Yes, slave contract and it's a bit different from the contract you have with the worker slimes and Kuro," Cecilia said.
Zen nodded his head in understanding before asking for clarification.
"What's the difference between a slave contract and the contract I made with Kuro and Romu?"
Although Cecilia said the contract is a bit different, he doesn't know what it is exactly. After all, he was still the master of the previous contract and could order the servant to do whatever he wanted.
Cecilia pondered for a while before explaining the slave contract.
"Once the slave contract is made, there is no way for it to be canceled unless the master wants to nullify it. Also, the slave contract prevents the servant from even thinking about going against his master; otherwise, he will feel unimaginable pain."