Katsu's Plot

Katsu has the Arc of Kaitos within her, controlling her at times and making her become Rise, often without her control.  There are two other similar Arcs as well, one allowing for the return of Ghost, and one for Zephyr.  The three were ancient entities/warlords of a civilization long past, the three of them having gone to war with each other at some point before destroying each other and having their powers sealed.

Is anyone interested in helping me do some things and taking an Arc?