If it's a hole, it's a goal.

Marshmallow Imouto Succubus, a nukige by Orcsoft, has been published by Sekai Project on Denpasoft and Steam.

Marshmallow Imouto Succubus is a nukige that follows a succubus awakening to her true nature. One night, Tsukikawa Keisuke dreams of his sister sneaking into his bed to give him a blowjob. The dream seems absurd given his sister’s extremely innocent, if not downright naïve, demeanor. While everything seems fine in the morning, he can’t shake off an uneasy feeling. His worries are confirmed when his dad, a folklorist, reveals to him that a succubus lays dormant within young Tsukikawa Saki.

In truth, it may be that Saki’s true nature is that of a succubus. However, as she lived her life in relative innocence, she could be prevented from succumbing to those tendencies. Keeping this in mind, Keisuke also has to consider his own safety. After a succubus preys on someone, their desire to feed on them becomes uncontrollable.

The visual novel features a short story with two endings and voice performances from Katakura Hina and Misonoo Mei.


Tsukikawa Keisuke had a strange dream. That dream involved his innocent younger sister, Saki. Saki was a naïve girl who even believed that babies were made from just kissing. However in his dream, Saki’s innocence was replaced by eyes filled with lust as she creeps into Keisuke’s bed. The next day, Saki was her same innocent self to Keisuke’s relief. He was relieved that it was a merely a dream.

However, he soon learns from his father that a succubus lurks within his little sister. Having to choose between his dear, innocent little sister and the allure of a lustful succubus, what will Keisuke do?


- Visual novel with 2 possible endings

- Japanese voice acting (Except protagonist)

- Voiced line playback

- History/backlog function

Marshmallow Imouto Succubus is now available on Denpasoft and Steam for the promotional price of $17.99 until September 29th, at which point it will cost $19.99. Adult content for the Steam version has to be installed using the 18+ DLC.

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