Boom.
The sudden thunderous blast interrupted the one-armed man's attack. He then discovered sunlight streaming down from above. Looking up, he realized that every building above the basement had vanished. Naturally, this change had been caused by Shen Fei's clash with Edelweiss of the Twin Wings.
While Shizuku Kurogane went into the basement to search for Nagi Arisuin, Shen Fei had also begun fighting Twin Wings. The two traded speed for speed, their weapons clashing dozens of times in an instant. Edelweiss wielded two swords and excelled at high-speed combinations. Her sword swings were so fast that even Ikki Kurogane using Ittoshura could not see them clearly. But Shen Fei was naturally different. He answered speed with speed, and the sword energy scattered by their exchange instantly destroyed Akatsuki Academy.
Shen Fei's battle with Twin Wings was unlike her battle with Ikki Kurogane in the original work. There, Twin Wings had fought Ikki purely through swordsmanship and had not used much magical power. This time, however, both of them used Demon-level magic. Their level of power was different, so naturally their destructive capacity was different as well.
No matter how impressive a technique was, without power behind it, it was nothing more than flashy, useless moves. That was also why Shen Fei could utterly suppress Ikki Kurogane.
"As expected of Twin Wings. Her control over her strength is formidable."
Through their earlier exchange of rapid strikes, Shen Fei had roughly grasped Twin Wings' strengths. Her true strength lay in her abnormal speed, which was somewhat similar to Ikki Kurogane's. However, Ikki needed to use Ittoshura or Ittou Rasetsu to achieve such speed, while Twin Wings could unleash it at will.
Generally speaking, if a person's exertion of power were measured from zero to one hundred, it had to pass through