The young man was not unwilling or unable to attack the beast. It's just that Aryan is afraid that if he strikes back at the creature, which incidentally is a resident of this Forbidden Forest, then this might have a bad effect on him. At least, it would be bad karma for Aryan to get to the Eighth Land.
That's why the young man just dodged and dodged again from every attack the beast made.
And before Aryan could deal with attacks after attacks from the cobra-like creature, suddenly two other strange creatures appeared that attacked Aryan.
The two creatures attacked as Aryan tried to jump from tree to tree to escape the cobra-like fanged jaws.
Aryan gasped, and suddenly staggering, one of the creatures that had just emerged from behind the mist managed to grab one of his hands. Then came a second creature who managed to grab hold of one of his legs.
"Hey…!" Aryan tried to struggle to free himself from the grip of the two strange creatures.