Leo was having a tantrum in the engine of the Argo II.

He was thankful that the other demigods would assume he was busy building something, and not just aimlessly whacking a hammer around, fuelled by pent up feelings of unappreciation.

He knew he didn’t have to be a screw-up, so why did everyone push him away-?

That’s when he turns to whack his hammer elsewhere, when he sees you. You were stood by the steps leading out of the humid room, bundled up in a blanket despite the temperature down here, looking tired and annoyed.

“Whatcha doing up so late, weirdo?” He goes for a jokey tone, but he’s embarrassed.