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...
You had a conversation that you had to 
hide from your master and the Tenshi,
أجريت حديثًا معه اضطررت لإخفائه 
،عن معلّمك وعن التّينشي
Du hast etwas mit ihm besprochen, was du vor deinem
Meister und dem Tenshi geheim halten musstest.
Tuviste una conversación que debías
ocultar de tu maestro y del Tenshi
Tuviste una conversación que debías
ocultar de tu maestro y del Tenshi
Et vous avez alors eu
une conversation que vous deviez
E con lui ebbe una conversazione che andava
nascosta sia al suo maestro che al venerabile Tenshi,
Você teve uma conversa que precisou
esconder do seu mestre e do Tenshi,
И ваш с ним разговор был таким,
что приходится даже обманом скрывать его