User blog comment:B214/Volume 23 discussion blog/@comment-77.188.220.109-20170502203945/@comment-31137559-20170503053537

He just fought against Barakiel, a Satan-class opponent and defeated him. And he was fighting evenly against Dulio, the strongest Brave Saint. And he only just became a devil and learned of his Sacred Gear and the supernatural world a year ago. And you still think he's weak? The question you should be asking is why is Issei so strong.