Private company

Nitroplus

Logo: © NITRO PLUS, Public domain, via Wikimedia Commons3

Japanese visual novel developer

Nitroplus Co., Ltd., currently stylized as NITRO PLUS, formerly stylized as nitro+, and formerly known as "OKStyle", is a Japanese visual novel video game developer that has developed a number of visual novels, including eroge. They have also collaborated with developer Type-Moon to create the light novel series Fate/Zero. Their works usually have dark themes such as reanimation of the dead, rape, and murder.2 It is part of CyberAgent.1 Wikipedia text CC BY-SA 4.0

Last updated Oct 20, 2026.

Overview

2000Founded1

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Saya no Uta cover
Photo: Nitroplus, CC BY 4.0, via Wikimedia Commons4

Nitroplus Co., Ltd., currently stylized as NITRO PLUS, formerly stylized as nitro+, and formerly known as "OKStyle", is a Japanese visual novel video game developer that has developed a number of visual novels, including eroge. They have also collaborated with developer Type-Moon to create the light novel series Fate/Zero. Their works usually have dark themes such as reanimation of the dead, rape, and murder. They also have a branch of the company called Nitro+chiral, which focuses on boys' love visual novels. Writers aligned with the company, such as Gen Urobuchi, have also contributed to various manga, anime, novels, and television works.2

Corporate structure

Nitroplus is part of a group headed by CyberAgent. 20 entities, 1 country on record. Switch between the flow chart and the network, and select any entity to see its details.

Built from parent and subsidiary links from GLEIF, the Global Legal Entity Identifier Foundation (CC0); subsidiaries, stakes and holdings from Wikidata (CC0). Each entity in the chart links to its source.

What it owns

What Nitroplus reports owning in its annual reports to the SEC: buildings, land and equipment, real estate and locations, investments, intangible assets and inventory, at the end of its latest fiscal year and a year before.

Stakes and holdings (Wikidata)

Things Wikidata records the company as owning, with the share when stated.1

Products and brands

  • visual novel

Listed on Wikidata.1

Subsidiaries and ownership

Parent company

Also owns

From Wikidata.1

Timeline

  1. 2000Founded Founded1

Sources

The numbers on this page point here. Each one links to the record it came from.

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