Board Thread:General Discussion/@comment-6192846-20150326001739/@comment-6192846-20150402022046

67.65.251.236 wrote: Hm. So previously it implied you didn't need a contract, but Irina says you do? I'm confused. Key phrase is "So long as they draw power from a higher existence." Contractors draw upon the demon's power by nature of their contract.

Carlos injured Conchita with his Golden Key dusted soup and body, but her contract had the poison she ate go directly to the demon and it took the brunt of the damage (hence why the demon ended up slowly dying of it instead).

Banica though, as a contractor herself, was able to naturally kill herself with the Demon of Gluttony's power, which her contract also led to her technically eating herself and thereby go directly to eating the demon.

That seems to be how it works. Irina's knowledge of Banica's death implies she had this conversation with Conchita so it doesn't sound like she's guessing this.