Board Thread:4. General Discussion/@comment-124.83.16.225-20160127164816/@comment-124.83.16.225-20160207113054

Nah, he did it to perform a suprise attack. If he had used his super regeneration ability or his existence restoration ability, the Hunting Hero would have reacted and escaped (the 4 Cardinals were the only surviving heroes by that point, I believe; all the others in the army had already been killed). I also assume he took into account the Star Reading Hero's ability; she hid herself from the battle after a certain point and only came out once she had read the future of Rou dying.

Rou could have also just chased them down with his raw power, I believe, but I suppose he didn't want to display any more power than necessary. Just like how he didn't perform a suprise attack on the combined armies when they arrived at the top and waited for them to prepare, he's been acting towards enjoying the fight and appreciating the prowess of his opponents. He only ever ups the bar when he's forced to.