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Sumikko Soft

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Japanese developer brand of PC games, known for bishoujo visual novels such as Natsukumo Yururu and Akiyume Kukuru.

Last updated September 27, 2026

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Overview

Sumikko Soft (すみっこソフト) is a Japanese brand that develops PC games, primarily bishoujo visual novels. According to its official website, it describes itself as a development brand for PC games and states that it renewed itself in January 2012, also refreshing its mascot character. The brand positions itself as working "in the corner of the industry" (sumikko means "corner"), aiming to make small but flavorful software. The brand's known works include Natsukumo Yururu (なつくもゆるる), which won the Scenario Award Gold Prize at the Moe Game Awards 2013, and Akiyume Kukuru (あきゆめくくる), released in December 2016. The official site's update log shows extensive promotional activity for Akiyume Kukuru throughout 2016, including trial versions, guest illustrations, countdown voices, and store bonus information. Sumikko Soft has also participated in events such as Character1 2015 and Denki Gai Matsuri 2014 Summer/Winter in Shinjuku, and has collaborated with other brands like SIXTEEN for a collaboration cafe. The brand maintains an official website with news updates, wallpapers, and contact information. While its exact founding year and corporate structure are not specified in the available evidence, it remains an active developer brand in the Japanese visual novel market.

History

Sumikko Soft is a Japanese brand that develops PC games, primarily bishoujo visual novels. The official website's ABOUT page states that Sumikko Soft is a development brand for PC games and that it renewed itself in January 2012, also changing its mascot character. The brand's name, "Sumikko," means "corner," and the site expresses the intention to continue making small but flavorful software "in the corner of the industry." The brand's early history is not detailed in the available evidence, but its update log shows activity from at least 2013. On June 28, 2013, its title Natsukumo Yururu (なつくもゆるる) won the Scenario Award Gold Prize at the Moe Game Awards 2013. In 2014, the brand renewed its website on August 1 and participated in Denki Gai Matsuri 2014 Summer in Shinjuku. It also participated in Denki Gai Matsuri 2014 Winter in Shinjuku on December 18, 2014, and in Character1 2015 on April 30, 2015. In 2016, Sumikko Soft focused on promoting its new title Akiyume Kukuru (あきゆめくくる). The official site's update log records numerous promotional activities: the website for Akiyume Kukuru opened on September 23, 2016; store bonus information was published on October 12; the opening movie and event CG were released on October 24; event information and a collaboration cafe with SIXTEEN were announced on November 3; a trial version was released on November 18; and the game was mastered (completed) on November 24. The game was released in December 2016, and on December 15, 2016, information about a talk event titled "Akiyume Kukuru Really Released" was published. The brand also held a release commemorative campaign and published countdown voices and guest illustrations. The available evidence does not specify the exact founding year of Sumikko Soft, its corporate structure, or its current status beyond the website updates. However, the brand appears to be active in the Japanese visual novel market as of the latest updates in 2017.

  • Sumikko Soft renewed itself and changed its mascot character.

  • Natsukumo Yururu won the Scenario Award Gold Prize at Moe Game Awards 2013.

  • Sumikko Soft website renewed; participated in Denki Gai Matsuri 2014 Summer in Shinjuku.

  • Participated in Denki Gai Matsuri 2014 Winter in Shinjuku.

  • Participated in Character1 2015.

  • Akiyume Kukuru website opened.

  • Akiyume Kukuru trial version released.

  • Akiyume Kukuru mastered (development completed).

  • Talk event information for Akiyume Kukuru release published.

  • Yokuwakaru Harukuru 15th installment published.

Products and positioning

Small but flavorful PC games made "in the corner of the industry".

  • Natsukumo Yururu (なつくもゆるる)

    A PC visual novel that won the Scenario Award Gold Prize at Moe Game Awards 2013.

  • Akiyume Kukuru (あきゆめくくる)

    A PC visual novel released in December 2016, with extensive promotional campaign.

Sources3 sources

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