The protagonist opens her eyes to find out she's been reborn as a spider. Which is already nightmare mode, before having to worry about cannibalism from other spiders, not the least of which being her mother! The story of a high school girl with  nerves of steel and her struggle to survive in another world begins here!
I thought I was just sitting in class.
...أتذكّر أنني كنتُ جالسة في الصفّ
Ich saß doch gerade noch im Unterricht …
J’étais en cours, il me semble…
Mi sembra che stavo facendo lezione...
Eu achei que estava no meio da aula...
Я же, кажется, была на уроке...