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.
Mom's Back, and oh, Dad's Back, Too
Mutter ist zurück, ah, und Vater auch
Mamá ha vuelto y papá también
Mamá ha vuelto y papá también
Maman et papa sont de retour
A mãe voltou. Ah, e o pai também