Hmm, I think it's ok. I'm actually not sure what more I can say.

I've had the pleasure of hearing the 1812 Overture played with cannonfire. Every year in the city I grew up in, they have an event called the Starlight Symphony in which the city orchestra would play a selection of songs from their performances for the year. They always ended with the 1812 Overture and had a full cannon battery for the song.

Loved the chapter.

Loved. Thanks

I mean, he's handling it rather well, all told. At least he's not going full CAPS LOCK IS CRUISE CONTROL FOR COOL Harry that we see throughout his fifth year, so I'd say he's doing great!

Nice follow up. I think people will very likely be reading.

If this is the same universe, years later, then perhaps his family discovered that he wasn’t dead...which has been done before, with Star Trek. If it isn’t, then he is alone...for now

So Harry fell through the Veil instead of Sirius. Interesting.
This leads me to wonder what the others may be doing while Harry's away.
Are they doubling their efforts to KO Tom "I.A.L.V." Riddle and his Death Eaters?
Are they still going to attempt to find and destroy all of the remaining Horcruxes?
May Sirius, if he survived the battle at all, be exonerated for the crime-that-he-didn't-commit?
or may he be doomed either to The Veil, Azkaban, or a Dementor's kiss?
Hmm.. If Sirius _IS_ Sent through the Veil.. May he arrive somewhere near Harry and Angel, or somewhere else entirely?

Well, if Harry learn how to apparate and a few charms wandlessly then escaping any prisons will be fairly easy, unless they are held in a space ship's brig in space. I wonder if there are any other magic users still out there or if they went extinct.

So~ How the heck did Harry get to Angel's "Prison"? The Veil? A rogue spell? A combo of spells?

yeah this has more hook to it.
He's a survivalist sorceror out of his time.
She's a tech wiz with integrated wi-fi who's weak on her feet.
Together they kick ass.

Ever thought of a Lucifer crossover?

If this reaches full story status, you might want to tweak a bit of phrasing in Marcus's intro. The line "out of the very air in her prison, someone who had the keys to her prison" is a bit problematic with repetition, though just putting extra emphasis on the word "to" could make it a turn of phrase. Aside from that, there were a couple of places that are more in your "voice" than Marcus's voice.

YEEEEEEEEEEEEEEEEEEEEEEEE

Hmm, this is a bit better and I agree that there wasn't enough for chemistry between them then.
Now, you can build that up. But I'd say if this becomes a story, We wouldn't see them become official until the near end of the fic. Just the feel I'm getting from this one, could be wrong.