Finally. The end of this story about a guy who found a girl who really, really likes sex. But his sister happens to be into girls, and has her eyes (and hands) on Toujou too. The only way to settle this is, of course, to see who can make Toujou cum harder.
Typical schoolboy finds out he’s a not-so-typical Love Demon, and is groomed by his family to become the next Demon King. Powers include impressive stamina in bed and the ability to start spontaneous orgies in public places.