Mature Content Description

The developers describe the content like this:

This game contains adult content, expressions, and fictional characters depicted in sexual situations. All characters depicted are mature adults. The game features naked characters engaging in sexual acts.

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.