Hogwarts Summoning Guide

While traveling alone, Bai Lin was hit by a green train and lost consciousness while saving a little girl who had fallen from a platform. When he awoke, he found himself transported to the wizarding world of 1993, where he possessed a Magical Creatures Summoning Guide: the ability to collect magical creatures to gain powerful magic and summon beasts. His identity was that of a magical creature researcher, sent to Hogwarts to assist with teaching, and also an undercover agent planted by the Ministry of Magic.