Yu-Gi-Oh! I Have a Clear Conscience by Secretly Changing Cards.

When he woke up, Long Dou found himself in the fighting world. He had been playing cards in the card shop just now. Could it be because he secretly added the dinosaur wrestler from the side to the main deck? Thinking of this, Long Dou recalled the whole story. It turned out that the opponent's attack signal at that time summoned a special right fist to attack the main player directly, not wanting to accidentally rupture his liver. After thinking for a moment, Long Dou met the former Cherry Blossom Country Card Contest Champion as soon as he went out. The card player was extremely jealous when they met, and the duel between the two began. Yu Mo smiled evilly, just when Long Dou thought Yu Mo would shoot the green caterpillar. What? Feather Moth shot the Galaxy Worm and then pulled out another Galaxy Worm. Could it be that the deck he used was a Light Worm deck? Not only that, this duel world is very different from what Long Dou has seen in ACG works before. Almost everyone is using competitive decks. Facing the violence, Long Dou didn't know what to do at this moment. Just when he was at a loss, a phantom's proliferating g appeared in his hand. Just drag any card to the phantom to turn it into a proliferating g.