i really recomand watching the anime, because it explaines it a bit better. U can
watch it at chrunchyroll, because the things in the "[]" are not really explained. but it is still very good and does have manny Details, but only 10 chapters :/
i guess its a good book, but i am at 7th grade and my frdnch isnt the best. I am from germany and hope, that this light novel will het an english or german Adaption