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6. How important is wealth to your character?
Oooh, Sena's relationship with this is interesting!
He knows he needs money to live, and becoming an adventurer alongside his friend is something that I think was motivated by running out of money and needing to eat (at least partly). He doesn't care about wealth per se but a lot of his attitude in general is very survival-minded, and a part of that is being able to afford things.
I'd say his attitude is somewhere between this tumblr post where someone talks about how one of their life goals is to get an apartment, and they're asked why they don't want more, to which they respond with "I can't afford it / it's unrealistic / in this economy?" (I can't find it, I looked), and a few conversations early in Library of Ruina that boil down to "I can't be worrying about other people or dismantling the system or whatever, I have my own stuff to deal with!"