"Kaio-ken?"
Remembering when he had watched Universe 6's Hit battle Son Goku, that crimson aura had enabled Son Goku, who was previously on the defensive, to mount an effective counterattack. So it made sense that he could use it himself.
How hateful—the ki from his use of the Kaio-ken surpassed mine. In a one-on-one fight, it would be very difficult for me to win. But this is just a hidden power of Son Goku's, merely a technique, so I still have a chance. After all, observing that fight showed that the side effects of the Kaio-ken are massive; if I time it right, I won't necessarily lose.
Chapter 153