[ENG] Kaa-san no Otoko ~Yajuu no You na Otoko ni Mesu no Yorokobi o Oboesaserareru Saiai no Haha~

母さんのオトコ～野獣のような男に牝の悦びを覚えさせられる最愛の母～

StoreVNDBv1 — Latest

1,185 viewsReleased Aug 29, 20261 patch

About the Kaa-san no Otoko English patch

Shin'ichi Kosaka shares a secret with his widowed mother, Mizuho: behind closed doors, they live as lovers. Their quiet life together is threatened by Onisawa, a violent man who has long had his eye on Mizuho and who often drops by the house. When he stumbles on their secret, he has all the leverage he needs.

Kaa-san no Otoko is a short adventure game from Eroit, released in 2015. It is voiced, centers on a single heroine and has multiple endings, with netorare and corruption themes.

This English patch translates the game's scenario, 3,856 lines in total. It comes as a patcher program that rewrites the game's text archive and keeps a backup of the original.

What the Kaa-san no Otoko patch translates

3,856
lines translated: 2
files in the patch: 1.3 MB
download size

A patcher that translates the game's 3,856 scenario lines and backs up the original archive.

Story text: dialogue, narration and choices
3,856 unique lines · Translated

How to install

1
Copy the patcher into the game folder, the one that contains archive.dat.
- kaasan_patcher.exe
- archive.dat
2
Double-click the patcher. It backs up archive.dat as archive.dat.bak, applies the English translation and updates the text references in the scenario data.
- archive.dat.bak
Launch the game normally.

Compatibility and troubleshooting

Troubleshooting

"archive.dat not found"

The patcher is not in the game folder. Move it next to archive.dat and run it again.

"Patch failed"

Your archive.dat may be from a different version. Restore it from archive.dat.bak and try again.

The game still shows Japanese

Make sure you ran the patcher in the right game folder. If archive.dat.bak exists there, the patcher did run in that folder.

Uninstall: Delete archive.dat and rename archive.dat.bak back to archive.dat.

Game details

Developer: エロイット
Original release: February 27, 2015
Format: Adventure for Windows
Length: Short (2 - 10 hours)
Voice acting: Voiced (1 voice actor)
Age rating: 18+

No "Keep Voice on Click" Option
Only a Single Heroine
Protagonist's Blood-related Mother as a Heroine
Nukige
Widow Heroine
Multiple Endings

FAQ

What does the patch translate?

The game's scenario: 3,856 translated lines of dialogue, narration and choices.

How do I install it?

Copy kaasan_patcher.exe into the folder with archive.dat and double-click it. It creates archive.dat.bak before making changes.

What do I need to run the patcher?

A 64-bit version of Windows 10 or later, and the game's original archive.dat.

How do I remove the patch?

Delete the patched archive.dat and rename archive.dat.bak back to archive.dat.

Patch history

v1
August 29, 2026Latest
- Shirok8
First release.
- Initial translation.

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