Although it wasn't as if Amelia and Mia were completely fearless or careless, only that the gate they had opened was not as powerful as their combined abilities. It only required 20% of their strength to defeat the monster in the vicinity. Instead of fixating on the creature and succumbing to worry, they decided to focus on getting Zero's attention.
But with how much amateur they were, the things that they were capable of were just at the level of middle school kids.
While their flirting skills were relatively unseasoned, Amelia and Mia compensated with sincerity and authenticity. They aimed to showcase their genuine personalities, hoping that their infectious energy and genuine interest in Zero would be enough to capture his heart.
Unfortunately, their intentions seemed unclear, and Zero didn't fully grasp what they were trying to do. Moreover, he was preoccupied with finding a way to escape the gate.