That's not a Tia! (moonfire spoilers)

[Niwashi]

They MAY have fixed this issue with the Tuesday update. I'm guessing most of the folks in this thread did the quest before the update? I did not - and when I did the quest the boy wanted to prove himself so that he could go on an adventurer's journey, not so that he could care for his family.

The stuff about "being without a father" was still there, but I didn't really see anything in the dialog that pointed toward him trying to become the breadwinner.

I don't know whether it changed or not, but I did the quest after that update, and the issue was there. After the update, the relevant portion of dialog is this part:

But I am serious about becoming an adventurer! You see, <name>, we don't have a father, so I help our mother look after Majha. I realized that I needed to become a man, to become strong enough to support my family. I just didn't know how.

But when I came to the Moonfire Faire a few years ago, and saw the Cascadiers drive off those dreadful Bombards, I discovered my calling in life—to become an adventurer! If I were as brave as the heroes of the Adventurers' Guild, I could protect my family from harm. I could provide for them.

So, he wants to protect his family and provide for them because his father isn't there to do so. It sounds like a nuclear family consisting of his mother, himself, and his sister, but no longer a father so he needs to substitute for that role. That doesn't sound like a Sunseeker tribe.