Koichi Ishii is a games writer, director, artist and producer who started the games industry career in 1900. Since then, Ishii has been working with Square Enix, Square, Square Product Development Division 3 and Grezzo. Ishii started as the director of Crystal War. Then, Koichi Ishii went on to work on Final Fantasy (1987) as the designer. Later, Ishii also was part of the team who developed Legend of Mana published by Electronic Arts for PlayStation 3, PlayStation, PS Vita and PSP. Most lately, Koichi Ishii worked on Trials of Mana (2020).