I Fell in Love With My Cool FWB but She Brought Her Big Breasted Sister Over
| App ID | 3938400 |
| App Type | Game |
| Developer | Hoi Hoi Hoi |
| 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 ( |
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...
Steam price history
Current Price
$7.99
Lowest Recorded Price
$4.79 at -40%
2 October 2025
| Currency | Current Price | Converted Price | Lowest Recorded Price | ||
|---|---|---|---|---|---|
 U.S. Dollar |
$7.99 | $7.99 | $4.79 | $4.79 at -40% | |
 Russian Ruble |
320 ₽ | $3.94 | -50.65% | $2.36 | 192 ₽ at -40% |
 Kazakhstani Tenge |
2300₸ | $4.27 | -46.46% | $2.56 | 1380₸ at -40% |
 Vietnamese Dong |
115000₫ | $4.36 | -45.37% | $2.61 | 69000₫ at -40% |
 Indonesian Rupiah |
Rp 74000 | $4.47 | -44.04% | $2.68 | Rp 44400 at -40% |
 Ukrainian Hryvnia |
187₴ | $4.48 | -43.82% | $2.68 | 112₴ at -40% |
 LATAM - U.S. Dollar |
$4.49 | $4.49 | -43.80% | $2.69 | $2.69 at -40% |
 MENA - U.S. Dollar |
$4.49 | $4.49 | -43.80% | $2.69 | $2.69 at -40% |
 South Asia - USD |
$4.49 | $4.49 | -43.80% | $2.69 | $2.69 at -40% |
 Indian Rupee |
₹ 400 | $4.51 | -43.54% | $2.70 | ₹ 240 at -40% |
 Philippine Peso |
₱274.95 | $4.72 | -40.85% | $2.83 | ₱164.97 at -40% |
 South African Rand |
R 82.00 | $4.73 | -40.68% | $2.84 | R 49.20 at -40% |
 Brazilian Real |
R$ 26,49 | $4.86 | -39.14% | $2.91 | R$ 15,89 at -40% |
 Chilean Peso |
CLP$ 4700 | $4.91 | -38.54% | $2.94 | CLP$ 2820 at -40% |
 Taiwan Dollar |
NT$ 152 | $4.95 | -38.04% | $2.96 | NT$ 91 at -40% |
 CIS - U.S. Dollar |
$4.99 | $4.99 | -37.55% | $2.99 | $2.99 at -40% |
 Malaysian Ringgit |
RM21.75 | $5.14 | -35.60% | $3.08 | RM13.05 at -40% |
 Colombian Peso |
COL$ 21000 | $5.34 | -33.10% | $3.20 | COL$ 12600 at -40% |
 Kuwaiti Dinar |
1.65 KD | $5.37 | -32.72% | $3.22 | 0.99 KD at -40% |
 Qatari Riyal |
19.99 QR | $5.46 | -31.62% | $3.27 | 11.99 QR at -40% |
 Mexican Peso |
Mex$ 100.99 | $5.47 | -31.45% | $3.28 | Mex$ 60.59 at -40% |
 Thai Baht |
฿179.00 | $5.49 | -31.17% | $3.29 | ฿107.40 at -40% |
 Peruvian Sol |
S/.19.00 | $5.52 | -30.83% | $3.31 | S/.11.40 at -40% |
 Japanese Yen |
¥ 920 | $6.04 | -24.38% | $3.62 | ¥ 552 at -40% |
 Uruguayan Peso |
$U249 | $6.19 | -22.44% | $3.70 | $U149 at -40% |
 South Korean Won |
₩ 8900 | $6.24 | -21.86% | $3.74 | ₩ 5340 at -40% |
 U.A.E. Dirham |
24.00 AED | $6.53 | -18.21% | $3.92 | 14.40 AED at -40% |
 Singapore Dollar |
S$8.50 | $6.54 | -18.06% | $3.92 | S$5.10 at -40% |
 Hong Kong Dollar |
HK$ 52.00 | $6.68 | -16.35% | $4.01 | HK$ 31.20 at -40% |
 New Zealand Dollar |
NZ$ 11.79 | $6.75 | -15.42% | $4.05 | NZ$ 7.07 at -40% |
 Costa Rican Colon |
₡3750 | $7.44 | -6.79% | $4.46 | ₡2250 at -40% |
 Canadian Dollar |
CDN$ 10.49 | $7.47 | -6.43% | $4.48 | CDN$ 6.29 at -40% |
 Australian Dollar |
A$ 11.79 | $7.68 | -3.79% | $4.60 | A$ 7.07 at -40% |
 Norwegian Krone |
89,00 kr | $8.82 | +10.42% | $5.29 | 53,40 kr at -40% |
 British Pound |
£6.69 | $8.91 | +11.63% | $5.34 | £4.01 at -40% |
 Israeli New Shekel |
₪29.50 | $8.96 | +12.26% | $5.38 | ₪17.70 at -40% |
 Euro |
7,79€ | $9.01 | +12.84% | $5.40 | 4,67€ at -40% |
 Polish Zloty |
36,99zł | $10.05 | +25.79% | $6.02 | 22,19zł at -40% |
 Swiss Franc |
CHF 8.99 | $11.17 | +39.91% | $6.70 | CHF 5.39 at -40% |
 Chinese Yuan |
N/A | N/A | N/A | ||
 Saudi Riyal |
N/A | N/A | N/A | ||
Valve suggested prices are shown on package pages.
Price history
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Additional Information
| Developer | Hoi Hoi Hoi | |||||||||||||||||||
| ReleaseState | released | |||||||||||||||||||
| Publisher | WaterBears423 | |||||||||||||||||||
| Store Release Date | 2 October 2025 – 03:21:09 UTC ( |
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| osarch | empty string | |||||||||||||||||||
| community_hub_visible | Yes | |||||||||||||||||||
| Social Media | https://x.com/hoi0609 |
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| Primary Genre | Adventure (25) | |||||||||||||||||||
| Store Genres | Adventure (25), Indie (23), RPG (3) | |||||||||||||||||||
| Store Asset Modification Time | 5 September 2025 – 04:04:27 UTC ( |
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| osextended | empty string | |||||||||||||||||||
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| Detected Technologies (?) | RPGMaker Engine, NWJS SDK, NodeJS SDK, Vorbis SDK | |||||||||||||||||||
| restricted_countries | CN,DE,SA China,  Germany, Saudi Arabia |
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| 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 ( |
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| 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 |
Assets
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