Rin: Yukio, what are you doing? Xiaoyan. Xiaoran is your biological son! ! ! They are still so young, how can you let them kill demons alone... Rin Okumura looked at his younger brother who was also the current demon king and begged. Yukio: Rin, you can't let them go too much. The devil's son cannot die casually! ! Haha, if they die, then they are so useless... They exist to protect you, brother! ! ! Rin looked at Yukio's sneer and then glanced at the two little boys in the Colosseum in ancient Rome. Sobbing silently. Yukio, why is this... They are our sons...