Inheritance… Said to be the gift of Teph, God of creation, for his sons and daughters to help them live in a world where Demons led by their own Gods also exist. A world where co-existing is just a dream for the citizens of both of these Gods.

Arthur, a young man who aspires to be someone great on his 18th birthday for all Inheritance are inherited on this special day. He is your typical man who dreams to have a castle full of riches with different women on his arms every minute. His Inheritance is what he thinks will lead him to this path, and being an adventurer is the most basic starting point towards his goal.

“What is the Demon Lord’s Disciple doing here?”
“You’re the tank right? Go block their attacks while we escape!”
“Wait! You’re abandoning me in the middle of a demon horde?!”

…

“Guess you have been abandoned by your friends…”
“No one is my friend.”
“How about you become my plaything. You’ve got some interesting Inheritance right there… Not like I’m going to give you a choice.”

Arthur, a young man who aspired to be someone great, falls under the hands of a demon who is planning to whip him every single day.