HP: Magic Beasts and how to tame them

Cancer is shit.
So after Nicholas died, R.O.B. send him in the magical world
of Harry Potter to live a new life.
A few request later, he is on his way.
To tame all magical beasts.
Or that's what he would, if the plot wouldn't come in his way.

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As you have seen in the title and synopsis,
this is a HarryPotter fanfiction.
I made a mistake when choosing the genre,
because it was my first time and the Support
couldn't help.
The universe belongs to J.K.Rowling.