Believe x Believe

"Believe x Believe" ( Biri x Biri) is the first Japanese opening theme to the Yu-Gi-Oh! ARC-V anime.

It is performed by Bulletrain.

Characters

 * Yuya Sakaki
 * Yushou Sakaki
 * Yuzu Hiragi
 * Noboru Gongenzaka

Card Appearance

 * Entermate Discover Hippo
 * Hippo Carnival

Monster Appearance
2 unknown "Entermate" monsters
 * Entermate Discover Hippo
 * Entermate Kaleido Scorpion
 * Entermate Sword Fish
 * Entermate Tiptoad
 * Entermate Whip Viper
 * Magician of Astromancy
 * Magician of Chronomancy
 * Odd-Eyes Dragon
 * Odd-Eyes Pendulum Dragon
 * 3 Hippo Tokens