✅ Recommended for fans of linear Nukige, NTR, and corruption stories where the younger brother dares to steal his perfect older brother’s girlfriend.

Kouta has always lived in the shadow of his brother Shouma—the ace pitcher, smart, admired by everyone. His only light was Yuuna, his childhood crush. When Kouta discovers Yuuna is dating Shouma, something inside him snaps. He resolves to betray his brother and seduce Yuuna, turning their forbidden relationship into a spiral of sex, obsession, and pregnancy.

Will Yuuna remain loyal to Shouma, or fall completely under Kouta’s twisted passion?

✔Non-Consensual (合意なし) ✔Male Protagonist (男性主人公) ✔Oral (口) ✔Vaginal (膣) ✔Anal (アナル) ✔Breast job (パイズリ) ✔Creampie (中出し) ✔Cheating (浮気) ✔NTR (寝取られ) ✔Netori (寝取り) ✔Corruption (堕落) ✔Ahegao (アヘ顔) ✔X-ray (断面図) ✔Impregnation (妊娠) ✔Pregnant Sex (妊婦) ✔Lactation (母乳) ✔Virgin / Defloration (処女) ✔Masturbation – Female (女性自慰) ✔Humiliation (屈辱) ✔Submissive Pose (服従ポーズ) ✔Public Sex (野外・公共) ✔Various Positions (多様な体位) ✔School Swimsuit (スク水) ✔Cosplay (コスプレ) ✔Sexy Lingerie (セクシーランジェリー) ✔Big Breasts (巨乳/爆乳) ✔Thicc (肉感) ✔Exhibitionism ✔Uncensored CGs (無修正CG)

Visual Novel × Nukige, NTR/Corruption, Blackmail Seduction

None; requires free R18 patch to unlock all adult scenes and uncensored CGs (nipple/pregnancy variants).

~2–3 hours if skipping text; ~4–5 hours reading fully, with two narrative phases (before/after Shouma’s discovery).

N/A. Linear VN without choices; focus is entirely on CG/scene progression.

High-quality ero art by Akikusa Peperon, exaggerating Yuuna’s voluptuous body. Scene variations include different nipple colors, pregnancy stages, and costumes. Backgrounds are simple photo edits, sometimes jarring.

Yuuna is fully voiced in sex scenes (JP), with erotic intonation that complements the lewd artwork. Limited BGM, repetitive outside of H-scenes.

Stable; simple interface. Requires external R18 patch to view adult scenes.

Acceptable. A linear VN divided into two phases—before Shouma’s discovery, where Yuuna undergoes gradual corruption, and after, where she is pregnant, fully depraved, and irreversibly transformed. Includes gallery unlock.

💔 Forbidden Triangle: Kouta steals Yuuna from his admired older brother, Shouma.

👩‍❤️‍💋‍👨 Childhood Crush Corrupted: Yuuna shifts from resistance to indulgence, culminating in pregnancy and darker play.

🖼️ CG Variants: 19 sex scenes with variations in nipple color, pregnancy, and costumes.

🎙️ Voice & Atmosphere: Yuuna voiced in H-scenes, with intense erotic delivery.

🎨 Distinctive Art Style: Exaggerated body proportions—huge breasts, thick thighs, and erotic detail reminiscent of Orcsoft/Mikanbatake works.

NATURAL CORDE is a straightforward Nukige VN focused almost entirely on NTR sex. The story is simple: Kouta finds out his brother is dating Yuuna, his lifelong crush, and decides to take her for himself. What follows is a series of sexual encounters that escalate from coercion to obsession, with Yuuna gradually succumbing.

It’s not about deep narrative or choices—it’s about the taboo of betrayal, illustrated by a large set of explicit CGs. Fans expecting complex storylines will be disappointed, but those seeking raw hentai logic and bold ero art will find satisfaction here.

📖 Linear VN: Pure text progression with CGs. No choices, no branching.

🖼️ Scene Gallery: Unlockable from the start; lets you revisit all CGs, costumes, and variations.

🔞 Patch Required: Must install the R18 patch to see sexual content. Without it, only all-ages story is shown.

Story is thin, typical of Nukige. It’s divided into two arcs:

1) Before Discovery: Yuuna resists but gives in to Kouta’s persistence and blackmail, leading to multiple trysts—even next to Shouma’s room.
2) After Discovery: With Shouma out of the picture, Yuuna embraces her new role as Kouta’s corrupted lover, including pregnancy and lactation content.

Themes of betrayal, obsession, and twisted affection dominate, though emotional logic is sacrificed for erotic progression.

NATURAL CORDE is a linear Netori Nukige where the story quickly fades into the background to highlight what truly matters: Yuuna’s corruption, her transformation, and an escalating visual orgy of erotic scenes. The setup of the younger brother chasing his childhood friend, who is also his older brother’s girlfriend, is only the pretext for a descent into pure hentai logic.

The game is divided into two parts. In the first, Yuuna still hesitates, torn between loyalty and desire, but each scene pushes her deeper until her resistance collapses. In the second, she is no longer the same woman—pregnant, perverse, with darker nipples and milk overflowing, a thicc heroine irreversibly changed by lust. The contrast between these phases makes her fall feel absolute.

Yuuna herself is drawn in the circle’s trademark style: voluptuous, thicc, and with airbag XXL breasts that dominate every illustration. The CGs explore every extreme—pregnancy, lactation, nipple color shifts, lingerie, cosplay, and public exposure—until the whole experience becomes a spectacle of excess. Her voice acting amplifies the effect, adding heat and intensity that match the artwork perfectly.

For players who want NTR and Netori wrapped around KI-SofTWarE’s signature exaggeration, NATURAL CORDE delivers exactly that. It doesn’t aim for realism, it doesn’t try to be subtle—it indulges completely in decadence. Taken as a showcase of erotic excess, it succeeds without compromise, and if you’re into voluptuous heroines pushed to the limit, this one won’t disappoint.

👍 High-quality ero art with exaggerated proportions
👍 19 uncensored scenes with nipple/pregnancy/costume variations
👍 Yuuna fully voiced in H-scenes
👍 Straightforward Nukige experience for NTR fans

👎 No player choices or branching routes
👎 Scene variety limited, with many CGs reused
👎 Differences often minor (belly size, nipple color, pregnancy variants)
👎 Backgrounds look cheap, relying on photo edits