Sure, it is. This book has the elements typically found in literary fiction like deep exploration of human emotions, sophisticated language, and a focus on character development.
The 'tomorrow and tomorrow and tomorrow short story' might have a theme related to hope or the lack thereof. If it focuses on multiple 'tomorrows', it could be showing how characters either look forward to the future with anticipation or are trapped in a cycle where each new day (tomorrow) is just like the last. Without reading it, it's hard to say for sure, but these are some common interpretations in literature related to the idea of successive days.
I'm not sure which ending you're referring to because the phrase 'The Flash fights aliens' could refer to different works or storylines. If you can provide more background information or context, I will try my best to provide you with a more accurate answer.
One possible plotline could be about a character who is constantly waiting for the next day to start a new life or make a change. Each 'tomorrow' passes by, and they keep putting things off. Another could be that the world in the story is in a cycle where every 'tomorrow' is a reset of some sort, and the characters are trying to break free from this cycle.
I don't know which famous network Tomorrow After Tomorrow is. However, if you know of other famous networks, I can provide you with relevant information.