A series of events, and suddenly I was in another world!

It all started when a Otaku or Nerd/geek named Takahashi Ketsunyo, average boy with jet black hair and black eyes occupation is student and is an introvert, most of the time he was avoided by other students wanted to buy a book from a manga shop, the book was known as "Mahou the Beginning" suddely while he was sleeping he met a pale long white haired girl her eyes were covered by her hair saying "help me!" then he had a vision of some kind of world and as soon as he woke up he noticed somethings weird...