It was the Stellar Sword Diagram, of course.

The Stellar Sword Diagram was his trump card, and it was his final trump card, and he usually wouldn’t reveal this trump card. Even when he fought the Celestial Demon Lord that day, he still hadn’t revealed it. Because once it was revealed, it wouldn’t be a trump card anymore. Moreover, while he’d attained the Voider Realm, he still didn’t dare rashly utilize it!

After all, it didn’t make him suffer backlash, it reduced his ...