Magical Beasts of Hogwarts

[HP fanfic + single female protagonist + slow heat + growth flow] [Three no systems: no tasks, no dialogue, no prompts] Guan Shixian, who was brutally murdered, accidentally traveled to the magical world of "Harry Potter" and was reborn as "Gary". The soul of a magical creature can reside in his body, and he can use incense as a guide to warm and nourish the bonded spirit. The power of chaos of the Obscurus, the purifying curse of the unicorn... Each time you make a contract, you can unlock a magical ability. When the magician encounters magic, he will become the only one in Hogwarts - the magical beast spirit master. Snape: "This child's potion talent is far beyond that of wizards of his age. We are often in the office at night..." Ron: "He likes my mouse Spot very much and often feeds it. You see, it has become chubby." Dumbledore: "Put down your wands. He is completely different from Tom. I vouch for this on my own behalf." Quirrell: "Of all my subordinates, only the 'boss' follows his lead." The pace of the early chapters is slightly slower, but starting from Chapter 40, the plot will accelerate.