The Dragon Girl's Ascension (Volume 2)

Desaray, a normal 14 year old girl, living a normal life.
Her everyday life suddenly changed when the world as she knew it ceased to exist.
Her world, but not her world.
Monsters appearing out of nowhere.
90% of the population disappeared.
An apocalypse like none other.
A system gained from killing a single monster.
Once human, now a dragon...
All of these things happening all at the same time, turning Desaray's world upside down.
How will she cope in this new world, not as a human but as a dragon?