Capítulo 67: Answer

When Cain returned to his residence, he bowed to his father's altar before falling exhausted to the ground. His breathing was rough, and he was having difficulty not passing out.

The training of Wave Focus not only made him deplete every iota of Astral Wave inside his body but also put his mind under immense stress. 

It took all of Cain's strength to wash his body and eat a meal before plummeting into his bed and falling asleep. 

Cain woke up in the middle of the night, and the first thing he did was eat again, but this time he devoured a Wave Beast's heart. As he engulfed it, he also communicated with Apex. 

"Apex, did you finish the investigation?"

Cain was sure he covered his tracks, but there was a chance people would find out or at least suspect his involvement in the demise of Nira and her brother. He wanted to be ready for that day, so he asked Apex to investigate the Kilor Family.