Nico Di Angelo, Assistant of Ironman

I've seen some of PJO and Avengers crossovers where Percy is Tony's assistant, but I was like, what if it was Nico? Because I love Nico and can never find enough fanfics about him. Pjo is aged up several years, they're adults now. Nico was annoyed. This isn't uncommon, seeing as he has to put up with annoying friends...