Naruto: the Eight Gates of Infinity Is Opening

The world boxing champion, Riku Ren, known as the "human flat-headed brother", traveled to the world of Naruto and became an ordinary ninja student, Sakamoto Rikihito, and opened the pinnacle human system. As long as you fight, you can convert the energy generated by the battle into your own power. As long as you defeat the opponent, you can copy the opponent's moves and skills, even the blood inheritance limit. Ever since, after the battle between Sakamoto and Metkai: Ding, congratulations to the host, the first door of the Eight Gates Dunjia is open, and it is permanently open! Ding, congratulations to the host, the second gate of the Eight Gates Dunjia, the Sheng Gate, is permanently opened! … One day, when the Kyuubi came to Konoha, a man wrapped in red flames appeared. That man, he kicked Kyuubi into two halves! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.