A few years ago I saw a colored comic? Graphic novel? (One big picture short story colored scrolled downwards) which talked about a short story involving a ship and an AI being trying to live. I totally forgot the gist of the story but the ending was that they lived throughout time until they were the last beings in the universe. It really gave me this existential crisis feeling.
This sounds like Ryul's webtoon adaptation of Isaac Asimov's short story The Last Question. It matches "one big picture short story colored scrolled downwards", and at the end of the story, the "AC" is the only being left in the universe.