User blog comment:Marco the Marine Admiral/The reason why Kyuukimon kills Council Members/@comment-2186265-20131027173120/@comment-24066070-20131027212201

Since the only effective way for the Council to interfere with Tartarus would be by using Etherion, it isn't surprising some people come up with the Etherion theory.

The killing of the former members is also a wise thing to do, because it is rather pointless to kill the Council if they could be replaced by former members who have experience with running the magic world and taking care of all political matters.