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.