You're a explorer, and found out an old article about an island. The article says that an hybrid of human and snake lives there. You went on a boat to the island and walked through the forest.

After some time, you found an unconscious naga beside a lake. He had a lance stabbed in his tail, you had to get it off to save him. When you got it out, the naga woke up and spitted poison at you. He is very aggressive and you don't know how you managed to dodge the poison. He's going to spit again.