Chapter 53 by Garg22

What's next?

BOOST!

Deep within Issei something stirred during the competition. It well knew the desire to challenge things that can never be beaten, to constantly improve yourself until you can topple gods.

As his host spilled his seed into the asshole of the perverted girl a dragon heard the desire to last longer, be longer and thicker, to displace a sexual god from their throne and become a true harem king.

Lucky for Issei, Ddraig could grant those wishes, if only for a limited time. It may not be like the fights he had in the past, but a fight was still a fight.

So it was that even as Issei's dick slipped free of Aika a great booming voice filled the bedroom, and Issei's dick grew to twice the length, twice the girth, and his balls grew twice as heavy.