He Who Vowed to Create a Demon Harem

He Who Vowed to Create a Demon Harem is a 2D RPG dating sim for players who enjoy monster-girl fantasy with turn-based battles woven into the romance. It leans heavily into adult content, so it suits players looking for an unapologetically explicit harem story rather than a gentle slow-burn one.

Story

In 1887, humanity is under siege by demons, and heroes rise to push them back. Theo, one such hero, sets out to reclaim the city of Manc from the demon family ruling it, the Halfas. His plan to fight the family's daughters unravels once he actually meets them, and a strange item soon turns old enemies into something closer than allies.

Gameplay

Players move Theo through story chapters that mix dialogue-driven scenes with turn-based combat against demonic enemies. Battles and exploration sit alongside the growing bond between Theo and the three demon sisters, with choices and combat encounters steering how far that relationship goes. Progress unlocks further scenes and story beats as the group's dynamic shifts from conflict to something else entirely.

Features

• Turn-based combat mixed into an otherwise dialogue-focused RPG structure
• Three distinct demon companions with their own personalities and arcs
• 2D character art with voiced scenes throughout
• A wide range of explicit content themes, including corruption and group scenarios