At the end of the 26th and final episode of Persona 5 the Animation TV anime on Sunday has announced that there will be a special anime. Titled Dark Sun…, it will be aired at the end of this year. More detail will be announced at a later date.
Persona 5 the Animation is a TV anime adaptation of the latest Persona game series. The Day Breakers TV special, animated by A-1 Pictures, aired in September 2016 to commemorate the game released a few weeks prior, and TV anime, animated by CloverWorks, aired for 26 episodes between April 8 to September 30. The manga adaptation by Hisato Murasaki via Ura Sunday has been serializing since September 2016.
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Source: Moca News