PSO2 vs Persona 3 and 4 Mashup, cause why not?

Yep, Sega has pillaged every other series for cross over content, from the recent Monster Hunter efforts to just about every other series that's big in Japan. The new one seems a fairly low-key effort with a Persona Labyrinth, some character art of characters from Persona 3 and Persona 4 with characters, costumes, accessories and mats.

More pics here (JP).