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About Marshmallow Imouto Succubus

Marshmallow Imouto Succubus is a visual novel about Tsukikawa Keisuke, who dreams that his innocent younger sister, Saki, enters his bed with lustful eyes. Saki is naïve and believes babies are made by kissing, so Keisuke is relieved when she seems like her usual self the next day. But their father tells him that a succubus is lurking within her, leaving Keisuke to choose between his dear, innocent sister and the succubus's allure.

The story has two possible endings. The game includes Japanese voice acting except for the protagonist, voiced-line playback and a history backlog.

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