Ye Tianchen was covered in blood and had used the strongest Superpower Killing Skill he could muster—the Golden Eyes. It wasn't that he wasn't powerful enough; it was that Sato originally possessed strength not inferior to his. Moreover, Sato had become not quite human but a monster, having consumed a large amount of gene-mutating drugs, becoming even more grotesque and powerful. Even his heart had been penetrated, yet he remained unscathed.
Sato ruthlessly stomped toward Ye Tianchen's head, intending to shatter his skull and watch his brain burst and kill him.
Truthfully, Sato was surprised, incredulous, and even more determined to kill Ye Tianchen. Ye Tianchen's displayed combat power was immensely strong, not any weaker than Sato's before he had used the gene-mutating drugs. This forced Sato not only to inject the drugs but also to consume another large handful even though his body could no longer bear it, an act that was practically seeking death.
