Chapter 19:
Koto takes her mother from the Shrine's Holy Grounds to the Looking Glass City.
Chapter 20:
The three siblings enjoy their time with their mother, but...
Chapter 21:
Koto tries to find out the secret of her birth from her mother, but instead she's asked to save her poor father.  With no place for her feelings to go, she takes them out on Myoue.
That's a holy place for 
the Shrine, isn't it?
Das ist ein heiliger Ort für den Schrein, oder?
Ese es un lugar sagrado 
para el Templo, ¿verdad?
Es un lugar sagrado 
para el Templo, ¿verdad?
Sur les terres sacrées 
de Sanctuaire, non ?
É um local sagrado para o Templo, não é?