Overview
SystemBilateral agreement
Human CostBody/Lifespan/Senses
Devil BenefitConsumption/Gain
DurationSingle use to permanent
EnforcementAutomatic by nature

Last updated: 2026-06-03

How Contracts Work

A contract forms when human and devil agree on terms: the human offers a sacrifice, the devil grants specific power. Contracts are binding by devil nature. Payment must precede power use, making contracts an investment with guaranteed return but non-negotiable cost.

Negotiation Strategies

Successful hunters diversify costs across multiple contracts, offer expendable body parts over essential ones, and find devils with aligned desires. The Future Devil's free contract with Aki demonstrates that devils can accept non-material payment when the terms satisfy their curiosity.

Contract Limitations

Devils cannot grant power they don't possess. Terms cannot be altered after formation. If a devil dies, its contracts void. Contracts cannot be transferred. These limitations create a strategic landscape where contract management equals combat skill.