Eventually, Rui found himself training in the Great Jrava Mountain Range once more.
He recalled the fight against the Stringing Executioner; she had managed to temporarily negate the effects of his Sonic Singularity domain by not allowing the sonic singularity to actually form.
By dispelling the technique when it had yet to take effect, she managed to deal with it much easier than if it had hit her.
This was a bit of an unexpected weakness but one that he should have expected in hindsight. Unfortunately, it was a fundamental flaw of the technique; he could not get rid of it, but he could mitigate it with other factors.
One of them was the solution that he had come up with in the fight itself, which was relying on the principles of Death's Sympathy. He could use that to bypass any barrier that tried to obstruct the sound coming from his domain.
'Regardless, her Martial Art was definitely potent,' Rui gave her the credit that she was due.