My impression is that even within Myth, only Ame would be considered coming from a poor background. Ina was living with her family and already make a good living being a professional artist, Mori and Kiara were struggling in Japan but their family in their respective home country seems to be doing fine, Gura might not be in her best mental state before Hololive but I don't remember any indication of her family having financial struggles.
Kiaras family isnt really particularly well off I'd say. Probably lower middle class or something like that.
In austria, Kiara basically lived from paycheck to paycheck, saving all of her money up to travel to japan.
Kiara said that her family never visited her while she was there because they lacked the money to travel that far.
Kiara mentions that she got hand-me-downs from her sister and there was only one PC in the house that everyone had to share for the longest time.
Not quite proofs that they were dirt-poor (they weren't) but the support network is thin. So I'd put her at the same level as Ame.
It always seems to me that Callis family back in the stats seems loaded as well. The have a house with a pool, thats a rich people thing isn't it?
Also Kiara still has habits of a penny-pincher, like she for groceries she sill goes to the cheapest chains there is (Aldi and Spar).
Also you would think that as a Hololive fan (before getting in and still now) she would own merch but she never buys any Hololive merch because she thinks its too expensive. She doesnt own anime figurines either.
Also Kiaras mother moved to the Hungarian countryside and bought some kind of run-down farm shes trying to renovate on her own. Kiara was worried about her mother during the winter because apparently the place her mom lives at has no heating (except a fire place) and not even electricity in every room. Kiara proposed to her mom that she could pass the winter at her place in Austria but she refused.
She also has chickens and I believe some other smaller farm-animals as well. Kiaras mom goes fox-hunting in the nearby forest to protect her chickens as well.
Kiaras brother is currently a NEET (and her Cat sitter) but he is also the outdoor type. He did the the entire Camino de Santiago, a popular pilgrimage route in Europe, about 500 miles long.
I find it fascinating that Kiaras family is a bunch of ragged outdoorsy types and then you have the youngest, Kiara, struggles lifting her groceries or ding half an day of walking.
Anyways, Kiaras mother is fucking based.
More deets from the Kiara + Haachama + Ame date
Azki is a surprising beast at Geoguesser, she now has 2 perfect runs