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.
The hole the little sister 
tore open has already closed.
Das Loch, dass die kleine Schwester gerissen hat,
 ist bereits wieder verschlossen.
El agujero que su hermana 
menor abrió ya se cerró.
Ya hemos arreglado el desperfecto 
que ha causado su hermana pequeña.
Le trou que votre sœur a fait
s’est déjà refermé.
O buraco que a irmã mais velha
forçou a se abrir já se fechou.