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.
This is my first time seeing this room.
Das ist das erste Mal,
 dass ich diesen Raum sehe.
Es la primera vez que veo esta habitación.
Es la primera vez que 
veo esta habitación.
C’est la première fois
que je viens ici.
É a primeira vez que vejo este quarto.