Tsukiko has a dream while afflicted with the magic essence cold.
This dream uncovers more of Tsukiko's magic potential.
Without knowing what's real or not, she sees a memory of the "magic essence system" itself...
Maybe an analogy for it would be like 
when you install an app on your PC,
يمكننا مقارنة ذلك بتنصيب تطبيق
،على الحاسوب الشّخصيّ
È simile a quando installi una nuova app sul tuo PC.
Uma analogia seria escolher o idioma
na instalação de um programa no PC.
Их можно сравнить с установкой приложений
на компьютер, когда выбираешь язык.