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Grateful Days Inc.

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Corporate brand

Unclaimed

Japanese company that plans, develops and operates online games, best known for the 3D community game MILU.

Last updated September 28, 2026

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Overview

Grateful Days Inc. (グレイトフルデイズ株式会社) is a Japanese company whose main business is the planning, production and operation of online games. According to its Japanese Wikipedia entry, the company is engaged in the planning, development and operation of the 3D community online game MILU, as well as the planning, development and operation of the Japan–Korea community site KJCLUB. Wikidata describes it simply as a Japanese company specialized in the production of online games. The company maintains an official website at gdays.jp. Beyond these core facts, detailed public information about its founding date, headquarters location, ownership structure and executive team is limited in the available evidence.

History

Grateful Days Inc. is a Japanese company whose principal business is the planning, production and operation of online games. Its Japanese Wikipedia entry identifies it as グレイトフルデイズ株式会社 (English notation: Grateful Days Inc.), a Japanese company mainly engaged in the planning, production and operation of online games. The entry's overview section states that the company handles the planning, development and operation of the 3D community online game MILU, and the planning, development and operation of the Japan–Korea community site KJCLUB. Wikidata similarly characterizes the company as a Japanese company specialized in the production of online games. The available evidence does not provide a founding date, headquarters location, ownership details, or a chronological corporate history, so the company's development over time cannot be reconstructed from these sources alone.

Products and positioning

Japanese online game planning, production and operation company, with a focus on community-oriented online games and cross-border community services.

  • MILU

    A 3D community online game planned, developed and operated by Grateful Days.

  • KJCLUB

    A Japan–Korea community site planned, developed and operated by Grateful Days.

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