He Who Vowed to Create a Demon Harem is an RPG/adventure game developed by Avantgarde
: Theo, a slayer forced to confront the morality of his mission and the unexpected humanity of his adversaries. He Who Vowed to Create a Demon Harem -v1.12- -A...
: You play as Theo, who unexpectedly finds himself traveling with three demon daughters of the Halfas family. He Who Vowed to Create a Demon Harem