Case closed

The problem is now solved! The betrayer has been discover.
When I 'interview' the betrayer, he asked his brother to help him to answer =.=|l'
Below is our conversation during the 'interview' session with the betrayer.

At last, he explained something in the clan's chatbox. But it is not clearly stated in the chatbox. Ahh.. nevermind lar.. atleast he explain that the 'lc' Denieru and 'lc' AMN post is not the real Denieru and AMN

Below is what he posted using my name in EMTF and DeGen chatbox.