note : this doesn't apply if Hazel or Bianca want to assert older kids' privileges, then it's Hazel is 4 years older than nico, and bianca is 2 years older than nico
my hot death sibs take is that it is a futile effort to try and give them any kind of "older/younger sibling" dynamic. they were born within a month of one another and after Hazel is revived they're still only like a year apart and are peers on every level. just give them a twins-like dynamic, cause that's the closest to what they have. the only time one of them being older (Hazel) ever is relevant/comes up is when theyre poking fun at one another. boom problem solved.
The di Angelo's are part Indian, because I think that would be interesting
They both look extremely similar, in fact, if you give them the same hairstyle, they would practically look the same, the difference is that Nico is usually terrifying to be near or look at, but Bianca is nicer ( funnily enough Bianca is more introverted while Nico is an extrovert). But if you look Nico in the eyes and suddenly you both are best friends (you just can't resist the soulful eyes) and also they're colored like earth (brown but with highlights of Gold Green, and Purple mainly but a bunch of other colors, and really, really pretty. Also they change color depending on the closest and biggest Jewel/Mineral nearby). While Bianca's eyes suck in all the light and are dark pitch black, and she gives terrifying death glares. But when blindfolded or something looks extremely nice
When people think Nico is creepy :
What do you mean he is creepy he is 12-13 barely a teenager!
look at this adorable face 'proceeds to aggressively squish Nico's face while Nico is blushing and looking embarrassed' how is he scary, and 'proceeds to baby talk Nico' look! he's so adorable ( even though 12 year old Nico is the same height as her, Bianca pretends Nico is still a tiny baby)
Hazel also joins in and fights against the seven, (in my au Hazel died at 14, and Nico revives her when he is 12, so there's a 2 yr age gap, and she is chronologically 4 years older than Nico, and 2 years older than Bianca) hazel is always talking about how adorable and kind Nico is
If bianca lives I want her to somehow or the other be there for nico, as the over protective older sister
Examples include,
the battle of manhattan/the final battle, and Nico arrives with the skeleton army, and the 3 gods, and bianca is just like, "well little brother you may be 12 now, but you'll always be my little brother"
When Nico revives Hazel ( in this au, he is trying to revive his mother), bianca and hazel talk, (hazel is 2 years older than bianca and 4 years older than nico), they debate who is actually older, but eventually they just bond over making fun of nico for being the younger brother
For the labyrinth thing, in this version nico is just outcasted and/or ostracised by the camp so he runs away and is found by Minos, it follows a similar plot as the actual book, but this nico is not bitter, he just thought minos was a genuinely nice/helpful ghost and was helping him, but when bianca finds out minos manipulated nico she goes beserk (nico is still the ghost king tho),
after the tartarus and Jar incident, she is mad at the 7 (minus hazel) for ever doubting her brother
then when nico almost fades after the athena parthenos incident, she's mad at reyna + the seven, but does eventually forgive them, but not forget
and after he jumps into tartarus a second time, she doesn't even know who to be mad at, she's just mad at both of them
Now, I'm imagining everytime she wants to find Nico she digs her hand into a shadow and pulls out nico