http://www.dlsite.com/maniax/work/=/product_id/RJ183431.html
Story
Across the rivers of Rainburg, there is a demon castle.
Here the demon king has been sealed for 100 years by the timeless power of the Rainburg royal family.
Now, an omen has visited… the demon king shall rise again..
It falls to princess Lucia to re-seal the king… can she!?
Summary
Loli princess Lucia is the protagonist of this R-18 RPG.
However, the player controls Loki, the prince of demons, who in turn manipulates Lucia.
She starts at level 99, maximum power, so progress is inverted:
lower her level by various methods with enemies, attacks, failures, and erotically related tactics.
Can she be weakened in time for the grand finish…?
Ecchi overview
Mainly pose artwork with special single-image CG ero scenes,
parameter-based reactions, special events with outfit changes (no main kisekae).
Battles and erotica are integrated with a seamless transition.
There are no battle scenes themselves.
System
The events of this game takes place over several days.
It’s not in real-time, but time advances with events and location visits, etc.
Additionally, people’s actions and shop access change depending on the time.
There’s a limit to the number of days to clear the game, but you get there eventually so you can play carefree.

Release: 2017/03/24
File type: exe
Genre: RPG, lolicon, oral, rape, sleep sex, outdoor, fantasy, humiliation, gangbang, interspecies sex, pregnancy, blindfold, panties, stockings, x-ray
Language: japanese
Interface: japanese
Censorship: yes
Size: 563 MB