Grastroth the King

Vines of thorn reach through all parts of the ground, and simultaneously choke everyone in the entire village and the entire castle, to death, except for you. You awaken and wander outside, seeing the streets and for once, all is quiet. On the outskirts of town, a super massive pink flower emerges from the sewer. It wasn't a dream, this was the being you freed from under the castle last night. I, am Grastroth. The castle and city are mine, but you're welcome to stay, tiny one.