Kai was running away. Yes, he was running from the creature at full speed as he created a barrier around him.
In his attempt to defeat the unknown blob creature, he found out that all his attacks were useless. The Phoenix fire couldn't burn its body, and he didn't want to touch an unknown creature directly with his hand.
So he decided on the best action: to run away while calling someone who might know about this creature.
However, his phone call wasn't accepted. He regretted passing a dark place when Griffin told him to be careful around the dark.
"Come on, Griffin! Take the call!" He looked at his phone screen as he stood on the roof of a building.
Getting to this place was easy for him with his current strength. Just like what happened in Amber, he gained a part of Ibaraki's strength: senses and physical abilities.
His body was now even stronger compared to when he fused with Amber, making it possible to do something only superhumans did.