Noé learns Naenia took Chloé's true name. Chloé's past and the d'Apchiers' history come to light, including her friendship with Jeanne, the Alteration Engine, and Ruthven's friendship with Chloé, which he shattered by trying to take the engine research.
The d'Apchier family
chose sound as their medium.
اختارت عائلة دابشير الصّوت كوسيط
Das Haus d’Apchier hat sich
für Klang als Medium entschieden.
La familia d'Apchier
eligió el sonido como medio.
Los d'Apchier optaron por el sonido.
Notre famille utilise
des signaux sonores.
La famiglia d'Apchier ha deciso di usare il suono.
A família de Apchier escolheu o som
como seu meio de comunicação.
Д'Апше в качестве 
проводника выбрали звук.