Again, we're not going to require this be all played out (especially since NPC encounters are a thing), but Tenkohime did promise bonuses to those who filled their cards (the card has 8 slots).

If three or more of those slots are with other characters in the game, your character will still get a cash bonus. Those who were active enough to get all eight, even if it's just all assumed NPC interaction, will get a smaller, but still good, bonus.