The loli give me La+ vibes probably meant to be a kusogaki, the sisters probably will have the generic smart one and dumb one dynamic, the blue one really looks like Kronii a little to much if you ask me, and the "leader" is literary this bitch from Genshin
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Ultimately I wont get excited/attached until we see some hint of their personality, even on twitter I expected them to try and play their "role" according to the lore, so we will have to wait for debut.