Sage Art: Sacred Phoenix Possession

A synchronization between phoenix and human, Sacred Phoenix Possession is a technique that allows user and contracted phoenix to become one.

Overview
A blood contract is necessary for this technique to work. The user summons their phoenix and initiates the transformations by weaving the Tiger -> Bird signs. A flash of red indicates the fusion. The resulting appearance depends on the user's gender. If male, their hair and eye color turns onyx and their clothes glow midnight black. They also have wings sprouting from their backs. Females, on the other hand, have red hair and eyes while their clothing changes to that of a crimson dress. Wings also sprout from their backs and females get haloes over their heads unlike males. In this fused state, the user retains all their abilities plus gaining access to some of the techniques their contracted phoenix has. In order to gain all techniques of their contracted phoenix, going one step further with their transformation is necessary.