My friend and I play multiplayer for the 3DS from time to time. I finished the story and killed Dire Miralis and he just got to high rank. when we do quests we get unity and we are both level 3, it shows on my guild card but on his it still says level 0 with all of the stickers, does he need to get further in the game to see his unity level up or is it something else?
Unity increases when you play with people whose Guild Card you have accepted. From your Guild Card list, you can only check how much unity you have gained from playing with a certain player, not that player's total unity. If your friend's unity isn't increasing, it's because you have not sent him your Guild Card.