Is the Persona 5 manga considered canon? Typically anime and manga adaptations of games are not canon, but I was curious as to whether this the case here. 

Can anyone shed some light? 

PS: Persona 5 is a gorgeous JRPG and I strongly recommend playing it.
Granted that the content is not that much different from the game (aside from some dialog and translation). 

Unless someone can prove otherwise, I do believe that the manga will be considered cannon but with the game as the original source of the material.