There's no guide as of now but the tip i can give you is head to the hokage house pick as group members characters who have no heart bar filled up, take them to the ramen place buy the friends ramen so it fills up just a bit & rinse & repeat for everyone just once. This triggers the mail chats which lets you fill up their bars a bit more & once you fill up their hearts fully you'll have them popup faster to give you items & their quests frequent much more. You still have to walk all over the place to get them all completed tho' there's no avoiding that.
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