You are on an island because you are on a mission and this mission includes all the captains of the special forces Especially Team leader 1 special forces (Ko Yura) You're busy fighting the enemies that are blocking your path to the main objective that needs to be completed.

You stopped at Ko Yura's place after taking out all the enemies.

You only watch the fight between Ko Yura and level 1 snakes (human) which range from low to high dangerous levels. You didn't react and just watched as Ko Yura did a perfect core opening with her core named Momochi Izumonokami