Big Demon: the Ancestor Awakened at the Beginning

Entering a world where demons are resurrected, Xiao Nan inherits his father's property and awakens a snail girl? Wrong! It's my eighteen-year-old grandma! People gave him the nickname "Tonggu Demon" "Help my grandma recover 2,000 combat power points and obtain god-level bloodline." "Destroy the monsters and monsters at the beginning and unlock S-level abilities" "System prompt: Grandma Yang is very expensive, so she will give you a small goal as a gift." Xiao Nan looked at his grandma who was in trouble. "Xiao Yan, the future of your children and grandchildren depends entirely on you." "..." The introduction is too weak. Grandpas, please take a seat. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.