Chapter 124: Magic Circle: Black Hole
Those black dots were oddly similar to Aya's magic circle.
She could only use those once awakened, and its power was outstanding enough to amaze Bei and Yuna!
That power also had sucked Cerber's body in. Once Aya had summoned more of those, Cerber's body ripped apart, and he died in the worst way possible, which was adequate to his sins.
Minato faced a similar test.
No, he was sure that this was the same power!
'Should I let those suck me in and see what happens? No, that's not how I should do it... This power wants to kill me... I must tame it before it kills me,' Minato corrected his train of thought mid-way.
As those powers became a little too troublesome, Minato racked his brain, thinking about his whole life. He believed that this whole test didn't appear without any deep reason. And as he kept thinking hard, Minato's eyes flashed with understanding!