Hayato Jonouchi

Hayato Jonouchi is a character in the Silver NX manga.

Hayato is introduced as a wealthy classmate of Shunichi Takahashi. Upon entering the Seven Stars Tournament, he became an intermittent rival to Shunichi. After his group was defeated, Hayato tailed Shunichi before confronting Judai Rhodes.

Two months later, he lost a duel to the RUIN possessed Daisuke Morimoto, and was taken to the Unys City Outlands, narrowly evacuating it before its destruction with the other civilians.

Death Chamber Arc
Shunichi thought of him, Silver, Nexus, Alpha, Omega, Judai, and Joeri when he said that he was not going to back down in his battle against Kaiser Schmidt like how they never gave up.

Final World Arc
During Theodore Heinrich's rule of Unys City in his alternate reality, Hayato is walking down a forest trail when he is attacked by one of Theodore's goons. He is rescued by Mizuki, and is taken to a hideout with several people who were not affected by Theodore's schemes. Hayato then begins reminiscing on the simpler times of when he and Shunichi fought as students in Seven Stars University.