Kai immediately used his quantum decoy ability and left the place. The aftermath of their attack would kill him without any doubt, so he left the place wisely.
The battle soon reached its peak. Every move of the ape contained world-destroying thunder, the Whisper King wasn't able to do anything and could only passively defend the incoming attack.
Seeing this, the thunder ape became more aggressive. The Whisper King wasn't able to endure anymore, it also revealed its entire strength.
It connected its body with the forest, and the entire Whispers of Echo came under its control.
The ape, soon surrounded by the forest, wasn't able to do anything. The Whisper King also didn't make any maneuvers to change the situation.
The entire forest bound the ape and began extracting its life energy, but the ape wasn't able to do anything.
The situation of Kai is much worse than that of the ape; he got caught up in the attack and is now struck in the root.