It's likely about the world and characters of 'Octopath Traveler'. Maybe it details the backstories of the eight travelers, their adventures, and the lore of the game world in a written, novel - like form.
In my opinion, Primrose's story is one of the best. Her journey of revenge is filled with mystery and emotion. The way she uncovers the truth behind her father's death and her encounters in the underworld make for a very engaging plot.
In Octopath Traveler, the story of Olberic is quite engaging. His journey of redemption and seeking justice after the fall of his kingdom is filled with emotional depth. He meets various characters along the way who either help or hinder his quest, and his growth as a character is really well - depicted.
Cyrus' story is also quite good. His pursuit of knowledge and the mystery surrounding the lost texts makes for an interesting plot. There are twists and turns as he delves deeper into the secrets of the past, and his interactions with other characters add more layers to the story.
Temenos' story stands out too. As a cleric, his investigation into a heretical cult uncovers a web of secrets and corruption within the church. His story has elements of mystery, intrigue and moral dilemmas which keep players hooked.
Osvald's story is also great. He is on a quest for revenge after being wrongly imprisoned. His story is complex, involving his pursuit of knowledge and justice. It's a story of a man who has lost everything trying to regain his life and make those who wronged him pay. There are many plot twists and turns that keep you engaged throughout his journey.