From its inception, Gainax worked on stories created in-house, such as ''Nadia'' and ''Evangelion'', but also adapted existing manga like ''Kare Kano'', ''Medaka Box'' and ''Mahoromatic''. Original series produced by Gainax are often known for their controversial twist endings. The ''Animage'' Anime Grand Prix was awarded to Gainax for ''Nadia: The Secret of Blue Water'' in 1991, ''Neon Genesis Evangelion'' in 1995 and 1996, and ''The End of Evangelion'' in 1997.
On May 29, 2024, Gainax filed for bankruptcy with the Tokyo District Court, which was publicly announced on June 7, 2024, the same day it ceased operations.
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