Skip to content
POPULAR TODAY Battlefield™ 6 New World: Aeternum Football Manager 26 Battlefield™ 6 Open Beta Call of Duty® Marvel Rivals
Enter Submit to view all results. Ctrl+Enter View and filter in instant search.
Close ×
Search powered by Algolia

I Fell in Love With My Cool FWB but She Brought Her Big Breasted Sister Over

Wishlist Follow Ignore Install Unwatch Watch
App ID 3938400
App Type Game
Developer
Publisher WaterBears423
Supported Systems Windows
Technologies RPGMaker Engine
Last Changenumber 31479470
Last Record Update 4 October 2025 – 11:37:19 UTC ()
Release Date 2 October 2025 – 03:21:09 UTC ()
❓ 64.08%
2 reviews
0
In-Game
🎲 RPG 🗺️ Adventure 🌸 JRPG 🗺 Exploration 🔞 Sexual Content

Kosuke and Sana met at university, exchanged their first experiences, and became FWB. They started to live in a new apartment together. But Sana was not his only roommate; her busty sister, Aira, was also there. Whenever Kosuke and Sana had sex, Aira would always join in. It made Kosuke confused...

Additional Information

Developer Hoi Hoi Hoi
ReleaseState released
Publisher WaterBears423
Store Release Date 2 October 2025 – 03:21:09 UTC ()
osarch empty string
community_hub_visible Yes
Social Media https://x.com/hoi0609
Primary Genre Adventure (25)
Store Genres Adventure (25), Indie (23), RPG (3)
Store Asset Modification Time 5 September 2025 – 04:04:27 UTC () (1757045067)
library_assets
library_capsuleen
library_heroen
library_hero_bluren
library_logoen
library_headeren
logo_position ↴
pinned_positionCenterCenter
width_pct90.84392679130099
height_pct84.7197094428222
osextended empty string
name_localized
tchinese明明迷上了冷嬌的炮友但她卻帶她的爆乳姊來了
japaneseクールなセフレに惚れたのに彼女が爆乳姉を連れて来た
Detected Technologies (?) RPGMaker Engine, NWJS SDK, NodeJS SDK, Vorbis SDK
restricted_countries CN,DE,SA
China, Germany, Saudi Arabia
Content Descriptors Some Nudity or Sexual Content (1), Adult Only Sexual Content (3), Frequent Nudity or Sexual Content (4), General Mature Content (5)
controllertagwizard Yes
First seen on SteamDB 7 August 2025 – 01:59:35 UTC (), in changelist #30459387
Content Descriptors (Including DLC) Some Nudity or Sexual Content (1), Adult Only Sexual Content (3), Frequent Nudity or Sexual Content (4), General Mature Content (5)

Supported Languages

3 Languages Interface Full Audio Subtitles
Traditional Chinese Yes Yes
English Yes Yes
Japanese Yes Yes

Tags

🎲 RPG 🗺️ Adventure 🌸 JRPG 🗺 Exploration 🔞 Sexual Content 🏽 2D 🌸 Anime 👾 Pixel Graphics 🤡 Comedy 🍑 Nudity 🌱 Indie 😃 Funny 📚 Story Rich 👤 Singleplayer 🫣 NSFW

Categories

Single-player Family Sharing Steam is learning Adult Only

Assets

Load all asset images 🔞
clienticon 165b1f6f78f75dd09dc43d291dd3399c86813356
clienttga 139449471de0448dd6e1fe7bae3a18eae19fe315
icon 64beeea6b81fdac5184977de48f3d33b1e02ed3e
small_capsule
englishf3866adcc2ce041a4a299ade708a85883f85c8fa/capsule_231x87.jpg
header_image
english797afcd2fe8dc98495eb8c4f6a564019e1548552/header.jpg
library_assets_full
library_capsule ↴
image/englishb00f534a1f9e02ca39011c2731ebdeba101d8131/library_capsule.jpg
image2x/englishb00f534a1f9e02ca39011c2731ebdeba101d8131/library_capsule_2x.jpg
library_hero ↴
image2x/englishc267dbfa4fc2078467c2d71a790c69ff06660538/library_hero_2x.jpg
image/englishc267dbfa4fc2078467c2d71a790c69ff06660538/library_hero.jpg
library_hero_blur ↴
image/englishc267dbfa4fc2078467c2d71a790c69ff06660538/library_hero_blur.jpg
library_logo ↴
image/englishc29bd781bd146552ca50ffcabb9f65c05776a1f8/logo.png
image2x/englishc29bd781bd146552ca50ffcabb9f65c05776a1f8/logo_2x.png
logo_position/pinned_positionCenterCenter
logo_position/width_pct90.84392679130099
logo_position/height_pct84.7197094428222
library_header ↴
image/english797afcd2fe8dc98495eb8c4f6a564019e1548552/library_header.jpg
image2x/english797afcd2fe8dc98495eb8c4f6a564019e1548552/library_header_2x.jpg
Assets
main_capsulec8497cc9c5607aab6aa682b7a6e734718b2493a9/capsule_616x353.jpg
small_capsulef3866adcc2ce041a4a299ade708a85883f85c8fa/capsule_231x87.jpg
header797afcd2fe8dc98495eb8c4f6a564019e1548552/header.jpg
page_background1141b728b90bb021b7cba392fed21933f5b1df49/page_bg_v6.jpg
hero_capsule98239b082bc21d950e4da4587a9891dd4530d193/hero_capsule.jpg
hero_capsule_2x98239b082bc21d950e4da4587a9891dd4530d193/hero_capsule_2x.jpg
library_capsuleb00f534a1f9e02ca39011c2731ebdeba101d8131/library_capsule.jpg
library_capsule_2xb00f534a1f9e02ca39011c2731ebdeba101d8131/library_capsule_2x.jpg
library_heroc267dbfa4fc2078467c2d71a790c69ff06660538/library_hero.jpg
library_hero_2xc267dbfa4fc2078467c2d71a790c69ff06660538/library_hero_2x.jpg
community_icon64beeea6b81fdac5184977de48f3d33b1e02ed3e.jpg
page_background_pathapp/3938400
raw_page_background1141b728b90bb021b7cba392fed21933f5b1df49/page_bg_raw.jpg
timestamp2 October 2025 – 03:21:07 UTC
Trailers
971677 ↴
trailer_nameGameplay
trailer_category1
trailer_480p/video/webm257193486/movie480_vp9.webm
trailer_480p/video/mp4257193486/movie480.mp4
trailer_max/video/webm257193486/movie_max_vp9.webm
trailer_max/video/mp4257193486/movie_max.mp4
microtrailer/video/webm3938400/555628628/932522e98f5cb0c570aaec31764f2fda2da98ba0/1757044764/microtrailer.webm
microtrailer/video/mp43938400/555628628/932522e98f5cb0c570aaec31764f2fda2da98ba0/1757044764/microtrailer.mp4
adaptive_trailers/0/cdn_path3938400/555628628/932522e98f5cb0c570aaec31764f2fda2da98ba0/1757044764/dash_av1.mpd
adaptive_trailers/0/encodingdash_av1
adaptive_trailers/1/cdn_path3938400/555628628/932522e98f5cb0c570aaec31764f2fda2da98ba0/1757044764/dash_h264.mpd
adaptive_trailers/1/encodingdash_h264
adaptive_trailers/2/cdn_path3938400/555628628/932522e98f5cb0c570aaec31764f2fda2da98ba0/1757044764/hls_264_master.m3u8
adaptive_trailers/2/encodinghls_h264
screenshot_medium257193486/b03e5f4029b415ecac095ad1c9b59214b407c027/movie_600x337.jpg
screenshot_full257193486/b03e5f4029b415ecac095ad1c9b59214b407c027/movie_full.jpg
all_agesfalse
is_highlighttrue
timestamp1757057474

Launch Options

0. Unnamed launch option
Executable Game.exe
Launch Type Launch (Default)
Operating System   windows

Configuration

Key Value
installdir I Fell in Love With My Cool FWB but She Brought Her Big Breasted Sister Over
SteamDB does not own I Fell in Love With My Cool FWB but She Brought Her Big Breasted Sister Over
Gift the game to our bot to improve our data
Developer? Send us a key for complete data coverage
Open link