The Good Aura is Good Energy that protects the host from the Desi Aura. In the body, the host can have very positive natures and heroism in the body protecting humanity.
The Good Aura has a limit to certain things, although it stays in the body of a host. The Host will not die out. Also they will be immune to the Desi Aura from posession.
The Good Aura is on a Limit and if that limit is used all up, the aura cannot be used until for 24 hours.