Unite

Unite is a special transformation available to devil hosts who have undergone the Devil-Binding Ritual.

Description
The host draws on the full power of their devil and assimilates the devil into their body, enabling them to contain and control the power of the devil and dramatically increasing their own magic power and capabilities. The host takes on physical traits of their devil, such as horns, a tail, and slit pupils, as well as being garbed in their devil's power.

Additionally, the host can integrate the devil's characteristics into their magic. For example, Gimodelo's "Pack" enables the host to create multiple clones of themselves. If the host is contracted to more than one devil, then they are able to unite with more than one devil at a time, resulting in a more powerful Unite mode.

If the contract is one between master and servant, the host can easily use Unite due to having full command over their devil and, while united, the host's mind is dominant. In a contract of equals, however, the process is more difficult, requiring the host and devil to work together and synchronize their thoughts. While united, their minds and personalities overlap, until they perfect the union by better understanding each other and sharing the same motivation, at which point they truly merge.