He Who Vowed to Create a Demon Harem [v1.13] [Avantgarde]

05/23/2025

4 min read 4 min

What happens when a hero falls for the demons he’s supposed to destroy?

Strange circumstances bring a human hero together with three demons,
and the four of them set out on the adventure of a lifetime.
They don’t work well together at first, but after a while (and with a little help from a special item),
these old enemies will start to REALLY get along…

The year is 1887.
Humankind has been assailed by demonic invaders from hell. For a time,
humanity’s future was uncertain… until brave soldiers arose who fought back the demons. These soldiers are called heroes.
One such hero, a man named Theo, has a goal in mind: take back the city of Manc from the demons who control it,
the Halfas family. But the daughters of said family ended up being a lot cuter than he expected…

Thread Updated: 2025-05-18

Release Date: 2025-05-16

Developer: Avantgarde DLsite – Ci-en – Twitter – Pixiv

Publisher: 072 Project Steam – Website – Discord – Twitter – Youtube

Censored: No

Version: 1.13 – 072 Version

OS: Windows

Language: English

Voiced: Japanese

Store: DLsite – 072 Project

Other Games:

Genre:

2dcg, 2d game, male protagonist, monster girl, turn based combat, japanese game, big ass, big tits, fantasy, adventure, voiced, vaginal sex, oral sex, masturbation, handjob, creampie, group sex, groping, multiple penetration, harem, pregnancy, exhibitionism, rape, monster, tentacle, sex toys, rpg, romance, urination

Installation:

1. Extract and run.

Changelog:

v2025-05-18

072 Version added

August 19, 2024

New GPT4o Translation

Bug fixes Ver1.13

June 18, 2022

Bug fixes Ver1.10

June 05, 2022

Bug fixes Ver1.09

June 02, 2022

Bug fixes Ver1.08

May 31, 2022

Correcting typographical errors Bug fixes Ver1.07

May 30, 2022

Bug fixes Ver1.06

Developer Notes:

CHARACTER

1942618 the rock rock | Free Adult Games

Protagonist

[Name] Theo Carlyle

[Race] Human

[Age] 19 years old

[Height] 183 cm

[Birthday] May 1

[Birthplace] Greatland Kingdom John Pool

[Title] Erected Hero

Theo is a hero’s father and novelist Boy with a mother. He decided to become a hero himself because he met the devil in his childhood.

He graduated from the brave school with a decent grade and became a brave man, but he is having a hard time due to his disgraceful title.

1942614 1657539202711 | Free Adult Games

[Name] Leila Halfas

[Race] Devil

[Age] Secret

[Height] 162 cm

[Weight] 54 kg

[Cups] E Cup

[Birthday] December 24

[Personal career]

Born as the second daughter of the prestigious Devil Halfas family ..

Her mother is a succubus demon, and although the relationship is unknown, her libido is strong.

She was interested in humans, and she went out of hell to the ground and watched from the shadows.

Her hobby is to delusionally masturbate with a boy.

She is of course a virgin.

1942615 1657539217829 | Free Adult Games

[Name] Mia Halfas

[Race] Devil

[Age] Secret

[Height] 150 cm

[Weight] Three pears

[Cups] G cup

[Birthday] May 17

[Personal career]

As the third daughter of the Halfas family was born.

She was quite withdrawn and she had no choice but to go out to the outside world when her parents told her.

She likes romance novels and is basically reading in the room.

I like the story of her brother and sister in love.

She has no sexual experience.

1942616 1657539232468 | Free Adult Games

[Name] Rose Halfas

[Race] Devil

[Age] ■■

[Height] 167 cm

[Weight] ■■ kg

[Number of cups] F cup

[Birthday] March 13

[Personal career]

Born as the eldest daughter of the Halfas family ..

She was born with a high level of ability, and she was soon educated as a demon who inherited the name of Count Halfas.

She has a cool personality and it’s hard to tell what she’s thinking.

She was popular because she looked beautiful, but she never made her lover. Probably the place

DOWNLOAD
Win: BUZZHEAVIER – MEGA – MIXDROP – PIXELDRAIN – VIKINGFILE

Old Translations

Win (GPT-4o): GOFILE – MIXDROP – PIXELDRAIN – UPLOADHAVEN – WORKUPLOAD
Required: Patch the game with the latest fixes/changes by running GameUpdate in the game folder or by manually patching it via GitGud (Updates to v1.13).
Translator: DazedAnon – Discord – Support

Win (MTL): GOFILE – MEGA – MIXDROP – PIXELDRAIN – WORKUPLOAD
Patches: English Fix

Extra: Save*