Board Thread:General Discussion/@comment-24717629-20140321203250/@comment-24545663-20140323193129

Im assuming

1. Kouketsu is using Rei as a blood source instead of Ragyo

2. Kouketsu Requires more blood than Kamui's so Rei is acting as a second source

3. Kouketsu works in the same way as "COVERS" by humans being power sources