I have so many post ideas but the release of the first chapter of "Ouroboros" by @yesterdayoats on ao3 made me shift my priorities
At first I thought the title was complete gibberish but I decided to search it out of curiosity
I found out that Ouroboros is an actual thing
"Ouroboros is an emblematic serpent of ancient Egypt and Greece represented with its tail in its mouth, continually devouring itself and being reborn from itself."
- https://www.britannica.com/topic/Ouroboros
"What does Ouroboros symbolize? Ouroboros is a gnostic and alchemical symbol that expresses the unity of all things, material and spiritual, which never disappear but perpetually change form in an eternal cycle of destruction and re-creation."
So what could this mean in the context of the fic?
Looking only at the tags there's some that I think are the reason of the title: deception, hurt/comfort, ccodependency.
By looking only at those tags, Arisu and Chishiya's relationship will be codependent with manipulation and deception. In this case, the Ouroboros symbolizes how their toxic codependency makes them destroy but also "re-create"/support each other. Their relationship will be mutually toxic but also with a side of support (hurt/comfort).
Ok that's all I wanted to say.