Bleach: Werewolf

Snow was a European girl who died in an accident, and was reincarnated in a world exactly like her previous one, but she was reborn in Japan.
For fourteen years, everything remained normal and peaceful, until on her fourteen birthday, her fangs grew and fur began to appear on her body, as well as a ghost of a man suddenly appeared to haunt her.

"Mom?! It grew fur on my arms!!"

"Oh dear, is this what they call puberty these days?" The mother replied nonchalantly.