William couldn't tell how deadly such an attack was. He first needed someone to fight against to test this attack. Just judging from his feelings when he executed this strike, and the narrow hole that was left behind wasn't enough.
In his past life, he had seen many "flashy" techniques that lacked substance, and he didn't want to fall into the trap of overestimating a move just because it looked terrifying.
"At least I managed to execute it…" he took a deep breath, stood up after one hour of rest and recuperation. His body still felt a bit heavy, but the spiritual ache had subsided.
"But it's not enough! I consumed most of my spirit power while stacking five slashes only. I have to lower that number and cut it by half first…"
He recalled his last night experience when he tried to lower the number of stored slashes while using his light-based move. He had struggled then with the instability of the energy when the "count" wasn't high enough to reach critical mass.
