Surprise.

Valerian and the team returned to the house, and they all slumped down on any soft surface they could find. After half an hour of silence, Viney asked, "Val, how did you know that the serpent can be killed that way? Do you know, even the Avion Party will have to shed a lot of sweat and blood to take it down." 

The other two also trained their ears at Valerian's voice. The young man said, "In my world, there is a magical creature, the Dragon. A few days before I came to this world, I found out about another species of dragons. They dwell in the deep blue seas and are called flood dragons. 

Despite the differences, all these species have one thing in common, They all have a reverse scale. This scale is taboo. Once you touch it, you kill the beast or will surely die. So when the beast got angry, I spotted the reverse scale flickering, so I decided to attack it there." 

Shiba sat up and asked, "You mean to say this attack was a gamble?"