As the resonance increased between the five of them, the five fragments of legacy inside their souls started to react and also resonated with each other.
The fragments were ready to react like that when three owners were close to each other or when the five of them synchronized regardless of the distance.
At that moment, the five of them could clearly sense the others. Gerken might have tried to hide, but he didn't. If there were people that shared his objectives, he wouldn't hide from them. He was conscious that he wouldn't be able to continue alone as he did.
He didn't need to worry about the Haven Academy or hiding his reputation anymore. He only wanted to destroy all the traitors and the invaders.
Although technically, his planet might have been saved if Eini's mother had forgiven the life of the traitor, with the traitor being able to execute that formation at any moment, Gerken didn't believe the result would have changed even if Eini's mother had let him flee.