ストーリー紹介

両親が出張で不在の広大な屋敷に残されたのは、ただ俺と妹の二人きり。
静まり返った館内に、いつしか甘美で危険な雰囲気が立ちこめていく。
普段は俺に無愛想な彼女も、二人きりの夜には違った顔を見せる。
ゆったりとしたパジャマに包まれた愛らしい寝姿。その裾から覗く柔らかな胸元とすべすべの白い肌――そのすべてに、俺の心は激しく揺さぶられる。

彼女の無防備な甘い息づかいに触れるたび、心の奥底で抑えていた禁断の欲望がじわじわと疼き始めた。

「もう我慢できない……」

抑えきれない想いが高ぶり、ついに兄妹の禁忌を破り、妹を俺色に染め上げる決意を固める俺。しかし、この夏休みには妹だけでなく、周囲にいる魅力的な女の子たちも俺に密かな好意を寄せているらしい。一ヶ月間の限定同棲——背徳に染まる胸の高鳴りを抑えきれるだろうか?

期間はわずか一ヶ月。兄妹禁断同棲生活が、今、始まる——♡

[Story]

She and I are left utterly alone in our quiet house.
In the dead silence of the residence, a sweet, dangerous tension begins to thicken the air.
She, usually so cold to me, reveals a completely different side of herself when it's just the two of us at night.
Her lovely sleeping form, wrapped in loose pajamas... The soft swell of her chest and smooth, white skin peeking out--the sight makes my groin ache and my pulse hammer in my throat.

With every one of her defenseless, sweet breaths, the forbidden desires I'd long suppressed began to throb with a raw, desperate need.

"I can't... I won't hold back anymore..."

My uncontrollable lust reaches its boiling point, and I finally resolve to break the ultimate taboo -- to defile her and make her completely, utterly mine. But this summer, it seems it's not just her; other tempting women are aiming their own lewd designs on me. A one-month limited cohabitation -- can I possibly contain my pounding erection as I drown in depravity?

The clock is ticking--only one month. The story of a forbidden life of secret passion begins now...