Belial

[One of the 72 Demon Lords]

Summoned by Han Sora in [Chapter 317]

Belial was a demon who usually would be impossible to be summoned by someone like Han Sora, but because Lee Kiyoung also sent his magic power and helped Han Sora, Belial was summoned. The reason Belial was summoned is that Lee Kiyoung is someone who has a wavelength that matches Belial very well.

Second Appearance at [Chapter 479]