Persona 4: The Ultimate in Mayonaka Arena

Also known as:  Persona 4 The Ultimate in Mayonaka Arena, Persona 4 Arena, P4U

The crossover fighting game Persona 4: The Ultimate in Mayonaka Arena is developed by Arc System Works (BlazBlue, Guilty Gear) and published by Atlus. The game features characters from both Persona 4 and Persona 3, and it's set two months after the story of the original Persona 4 role-playing game.

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Producers, official website and other details: Wiki