The Tenshi's servant Hane is actually Kyoukei, acting Master of Zensei, who believes Den Shinchuu possesses an important secret concerning the Koushin War.
He reveals that he hid his identity to get closer to Den Shinchuu and planned this attack so he could acquire that secret.
However, when Den Shinchuu refuses to talk, Kyoukei summons Meikonjutsu user Ro Ryou and tries to steal Den Shinchuu's memories...
And since that day, you 
haven't been able to sleep.
.ولم تتمكّن من النّوم منذ ذلك اليوم
Und seit jenem Tag konntest
du kein Auge mehr zutun.
Desde entonces,
no has sido capaz de dormir.
Desde entonces,
no has sido capaz de dormir.
Et à partir de ce jour,
vous êtes devenu incapable de dormir.
E così, da quel giorno lei non ha più dormito.
E desde aquele dia, você
não conseguiu mais dormir.
Ну а вы с того самого дня
больше не могли спать…