Planned Release Date: Jan 29, 2026

Mature Content Description

The developers describe the content like this:

This title is designed for adult (18+) audiences only. The content of this game may not be suitable for all people.

This game contains fictional representations of the following: nudity, sexual interactions including consensual sex, nonconsensual sex, anal sex, oral sex, group sex, breast milk, feces, and urine.

All players of this story should also be functionally resilient to potential stressors such as depictions of alcohol consumption, crude language, fictional pleasure enhancing drug injections, bodily harm, body modifications, insinuated abortion, and slavery.

This game is designed purely as a work of fiction, please play responsibly.

About This Game

Artist and writer Sei Shoujo's erotic talents are on display once again in the sequel to SLEEPLESS - A Midsummer Night's Dream, SLEEPLESS - Nocturne!

A pair of naive college students, Kawai Tomoki and Komori Yukino, are out on a date which is interrupted by a sudden car trouble. When the young couple abandons their vehicle to find help, they find themselves at the door to the Black Rose Manor. The dazzling Mamiya Marie, mistress of the estate, graciously invites them into the lavish splendor of the mansion where they are greeted by Aria, the estate's stoic, yet alluring maid, Maria, Marie's gorgeous daughter, and most mysteriously a pink-haired, cat-eared girl in a collar who introduces herself as Takamizawa Rui.

As the couple decides to spend the next few days at the isolated estate, are they prepared for the debauchery that awaits them...?

The erotic mastermind behind Bible Black and STARLESS (just to name a few!). Reprising his role as both artist and writer for the sequel, Sei Shoujo once again demonstrates why he has earned his legendary reputation as an erotic artist.

Twice As Nice?

Both protagonist Tomoki and his girlfriend Yukino entering the mansion together opens up a novel array of indecent opportunities to enjoy.

The cast of the previous game, SLEEPLESS - A Midsummer Night's Dream, returns for more!