Crown of Lust

Crown of Lust is a fantasy adult visual novel that throws you into the diplomatic deep end as Prince Aldric, a sheltered royal sent to as an envoy of peace into the fearsome Kingdom of Valoria—a land your kingdom has been at war with for generations.

Raised on terrifying tales of Valorian savagery, you arrive at their borders expecting the worst...only to discover that the "barbarians" are a kingdom of beautiful women who find your royal mannerisms equally as strange as you find their customs.

[From Steam]