Nico found out that the dead don’t get to eat or taste or see anything so he summons them just so that their afterlife isn’t so sad/lonely/stagnant
Nico jumping around the world visiting random people, and he keeps bumping into the hunters, and they're all awkwardly staring at each other before he makes an awkward excuse to go away
Nico just knows everyone in different pantheons, and is on good terms with them
Nico is a baby gremlin, and adorable, and the only place where he isn't accepted is camp half-blood, and camp jupiter
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