The Hero, and the Demon Lord?

Yuusha to, Maou? (勇者と、魔王？)

Julius reveals they are hunting a spider monster. Nameless realises one of her magic skills allows her to see a few seconds into the future and successfully defeats a giant eel, later using the eel’s corpse as a makeshift shelter so she can evolve into a Zoa Ele spider with higher combat and stealth, glossing over that humans consider Zoa Ele’s to be harbingers of misfortune. After evolving she is happy to find her front legs are now as sharp as knives and her body has generated armour plates. She also purchases the Perseverance skill that makes her more likely to survive with low health, though it also increases her Taboo skill. She also becomes able to use Detection to better sense her surroundings. Dual Perception also gives her two distinct minds so she can multitask more efficiently and literally talk to herself. Julius and his team are attacked by three Greater Taratects and an even higher level Taratect, the Nightmare’s Vestige. Julius kills the Taratects then manages to kill the Vestige with his team, but as they leave Julius cannot escape the feeling the Vestige was actually afraid of something else they failed to see. Elsewhere, a Demon Lord is revealed to have been watching the Vestige which had betrayed her and needed punishing. Shun’s popularity grows due to Julius’ victory, making Hugo even more jealous.