Argento Soma: Hitori to Hitori is an episode featuring Sue as the main character and dives into her backstory and motivation for why she became a pilot. I think it's worth watching for anyone invested in Argento Soma as it would add a better understanding of Sue's character, despite it being only one episode. The most fascinating part about this episode is seeing how Sue reacts to her situation and how all her insecurities are projected onto the alien who is also part of this episode. The ending credit featuring Dan Simmons is also hilarious! I'm a pretty solid standalone, 6.5 out of 10. Itwould have been much better if we had a few episodes tied to everyone's backstory to flesh out the characters further, but this will do.