Had Estrella not felt the shift in Lucas' state of mind. She would have missed the moment when Lucas entered into the state he called "Blood Flow".
There had been no more telltale sign, apart from the first stronger beat of his heart whose sound had escaped from his ribcage.
The others behind were lucky that she had created a barrier as soon as she had noticed the change. And the luck stretched to encompass the fact that Lucas had only been using the ground as support. But even that had been enough to crack the frozen air reinforced with her energy, leaving the air to look like cracked glass.
Estrella held her curse back as she took back her energy, leaving the frozen air to finally fail to hold together and fall into pieces on the ground.
Mountain, who had been finding back a bit of pride when Lucas had been at a disadvantage, clenched his fist, the trepidation still making his heart unable to calm down.