Yu-Gi-Oh!: Undefeated/Ultra-Meta!

Yusaku joins a Yu-Gi-Oh! playtest… and a flash of light later, he finds himself isekai’d—right into the game. This is a world where dueling rules all. There are native “locals,” and there are players from elsewhere the locals call “despicable outlanders.” Local A: “Trying to win with a Blue-Eyes deck? That build’s ancient… wait—why is your Blue-Eyes running a full ‘Sangen Summoning “C” + Spright’ package?!” Local B: “Do you know the pinnacle of Fusion—the limits of Branded? I’ll stop you before your Rank-… hey, what—why are you on Tearlaments this turn?! It was my turn!” Player A: “Ever heard of the Fourth Calamity? Watch what real power looks like—wait, what do you mean that deck isn’t even released yet?! Bro, stop, I was wrong!” Player B: “Weren’t players supposed to stomp NPCs? Why am I the one getting farmed?!” After this keeps happening for a while, Yusaku unknowingly collects a pile of titles— including but not limited to: Famous Fake-NPC Role-Player, Savior of Satellite, Veteran of the Six Summons, Guardian of the Tops, Player Harvest Reaper, Incorrigible Onee-san Chaser… (and 108 other titles omitted). (Reupload: Mainly focus in duels and duel spirits, there are some known characters but there are lot of OC duelists)