This is a game modeled after an H-game that was released way back in 2006, Sengoku Rance by Alicesoft,
Rance is a warrior from the west, who in previous games focused on classic sword and sorcery dungeon crawls, combined with lots of naughty fun times with different warrior women, monster girls, and basically any woman he could get his hands on. After being forced to flee from his home country, Rance ends up in JAPAN, an alternate-world version of Japan during the Sengoku Jidai area: numerous warlords and small independent states across the country constantly battling each other for dominance in an attempt to become Shogun and be the unquestioned ruler of Japan.
Shortly after arrival Rance is recruited by Oda Nobunaga, a good man weakened by sickness whose country is on the verge of being torn apart by civil war. Hired as a mercenary to to assist Oda's loyalist forces, Rance quickly crushes the rebellion and is selected by Nobunaga to take his place on the battlefield and become Oda's new warlord. As this is a world where every state in Japan has their own princesses, plenty of female soldiers and lots of female generals, Rance is fully willing to accept this responsibility as part of his own ongoing quest to bed every woman in Japan. Rance is obnoxious, brash, reckless, arrogant, and frankly, not that bright. But his unstoppable determination and strong protective urge over the companions he gathers leads him to great success on the battlefield and the rapid growth of Oda.
Disaster strikes when one of eight gourds sealing away an ancient evil is broken, the fragment of darkness secretly infecting Nobunaga. Rance gets orders to conquer the nations that possess the other gourds, and ultimately a Demon Prince is unleashed. The Demon gathers his disciples and rapidly conquers part of Japan, his seemingly unstoppable horde of monsters poised to rip through the entire nation. Only Oda, led by Rance and the heroic generals he's gathered to his side, have the numbers and power to stand against the demons, fight their way to the stronghold, and slay the Demon.
If it wasn't clear, I'm looking for someone to GM something similar against my warlord. A man seeks to conquer the world, or just a country, and with every area he conquers there are princesses to claim and heroines to seduce to his side. This has the potential to be a group game, but I would prefer to keep it solo or small group. It would work well as a system or freeform game. I have the most experience in Pathfinder/3.5 or New World of Darkness, and have access to materials for DND 4th and 5th. I understand GM'ing is quite work-intensive (I've done it myself in the past) and I'm happy to help with building the various heroines mechanically in the system or create portions of the setting myself. Specifics of setting and character I would prefer to discuss with a potential GM, so I'll leave it loose for now other than stating I'd be up for just about anything; medieval, steampunk, scifi, urban fantasy, eastern medieval, etc.
While this setup could easily become a rapefest, I'd much rather stay away from constant non-con. Certainly there can be heroines or princesses who find the idea of switching sides highly objectionable, but ultimately they all willingly serve beside (and under, or on top of, or in the training fields...) the warlord. I'd like the darkness to come from the enemy, the cruel tyrants being overthrown and the inhuman beasts seeking to ravage the world.
To be more specific about how I would like a game like this to function in terms of the mechanics and system:
I run and build a male warlord character. Characters are used as individuals and, with minor rule adjustments as needed, abstracted out to represent an entire military unit led by that hero. Female heroes and generals are initially built by the GM, but once I recruit them I take over their mechanics, leveling them up, equipping them, doing their math, etc. GM still runs the female characters in RP, but once they've joined me I may RP control them at different times to open up more possible scenes and interactions.
I look forward to hearing from anyone interested.