Aaronrules380
Member
Yep, those are the ones.
They aren't essential, they're just fun chats between characters that can also raise your affinity further. Raising party affinity has a bunch of uses, most notably allowing for longer chain attacks, so they can be useful, but not essential. A bunch also give hints about what types of gifts party members like and dislike if you want to raise affinity even higher (This is a system that's kind of hidden, but you can give collectibles from one party member to another as a gift to raise (or lower if they dislike it) affinity faster)