Shouzou Kaga (加賀昭三) is the creator of the Fire Emblem series. He was a video game designer who worked for Intelligent Systems, and led the development of Fire Emblem from its inception until the release of Thracia 776, after which he left the company. Kaga subsequently founded an independent studio called Tirnanog. The first game developed by his new company was TearRing Saga: Utna Heroes Saga. Because the game's design and structure bore very strong similarities to Fire Emblem, Nintendo sued the game's publisher Enterbrain on grounds of copyright infringement. Nintendo initially had their claim rejected by the courts, but won a settlement on appeal. However, TearRing Saga was not ruled in breach of copyright and sales were allowed to continue.
The legal dispute stretched from 2001 to 2005, the year that Kaga's second TearRing Saga title, Berwick Saga was released for the PlayStation 2. Following the release of Berwick Saga, Tirnanog has not produced any further titles.
In 2015, Kaga announced that he is at work on an independently produced strategy RPG called Vestaria Saga: The Seven Sacred Rings. The game is being developed using SRPG Studio and Kaga's intention is to release it for free once it is finished. Vestaria Saga Part I was released as a free download on September 5, 2016 and was well recieved by fans. The game used some artwork from TearRing Saga.
- 1990 - Fire Emblem: Shadow Dragon and the Blade of Light
- 1992 - Fire Emblem Gaiden
- 1994 - Fire Emblem: Mystery of the Emblem
- 1996 - Fire Emblem: Genealogy of the Holy War
- 1997 - Fire Emblem: Archanea Saga
- 1999 - Fire Emblem: Thracia 776
- 1998 - Super Famicom Wars
- 2000 - Trade & Battle: Card Hero (Technical Adviser)