Full game metadata
| Field | Value |
|---|---|
| Steam app type | game |
| Steam App ID | 3959980 |
| Live current players | 1 |
| SteamPulse tracked peak | 12 |
| Live count (today's peak floor) | 1 |
| Price | $13.59 (20% off from $16.99) |
| Free to play | No |
| Discount | 20% |
| Original price USD | $16.99 |
| Current price USD | $13.59 |
| Release date | Apr 30, 2026 |
| Developer | clamCestbon |
| Publisher | やぶから堂 |
| Owners estimated | Not available |
| SteamSpy owner estimate minimum | Not available |
| SteamSpy owner estimate maximum | Not available |
| Review type | Mixed |
| Positive review percent | 57% |
| Positive reviews | 8 |
| Negative reviews | 6 |
| Total reviews | 14 |
| Steam recommendations | Not available |
| Achievements | Not available |
| Average playtime forever | Not available |
| Windows support | Yes |
| macOS support | No |
| Linux support | No |
| Parent game | Not available |
| Store URL | https://store.steampowered.com/app/3959980/ |
Short description
This is an immersive cohabitation simulation game with Umi, brought to life with full Live2D and full animation.
About this game
A super-erotic, lovey-dovey, sweet cohabitation sim rendered in full Live2D & full animation! From sweet touch and feel to detailed cross-sections and intense sex. Your sugar-baby childhood friend, Umi-nee, is waiting for you... 【Game Overview】 What is it like to live a lazy, sexual life with your freeloading childhood friend? This is a high-immersion cohabitation simulation game with your older-sister-figure, Umi-nee, powered by full Live2D and fluid animations (Hentai / Adult / Eros / R18). Boost her affection through [Talk], [Touch & Feel], and [Sex / Ecchi] to enjoy her shifting reactions! Her responses change based on her mood and love meter. As you dive deeper into your sweet lovey-dovey days, the time will come to take responsibility with extreme creampies (cumshots)! *Note: "Nee" (Sister) is used as an affectionate term for an older woman. You are NOT biologically related, so feel free to enjoy pure, unrestricted sex! 【Game Features & Fetishes】 🏠 Home Scene: Sweet Everyday Cohabitation Welcomed by Umi-nee’s warm, sweet "Welcome home" voice lines. Her condition and horniness change dynamically every single day. Trigger special event dialogues by satisfying her or making her squirt/orgasm! 🔞 Sex Scene: Ultimate Hardcore Hentai Action Detailed Cross-Section (X-Ray View) : Witness the exact moment your dick (chinko) penetrates her pussy (manko) with beautiful cross-section cutaways! Cumshot & Semen Accumulation : Highly detailed visual representation of your cum building up inside her womb after a deep creampie. Double Orgasm : Includes standalone orgasms as well as synchronous double climax animations where you cum together! Anal Sex : Includes a dedicated anal cross-section view for the kinky players. Conception / Fertilization Cut-in : A brain-melting visual when you successfully fill her up! 💕 Pillow Talk: Highly Affectionate Aftercare Deep, wet, and intimate post-sex whispering that highlights her caring older-sister nature. Pillow talk dialogues change depending on the intensity of the sex scene and her current affection level.
Supported languages
Japanese * , English, Simplified Chinese, Korean * languages with full audio support