Spreading Despair in a World of Card Games

My name is You Feng, and I've transmigrated into the world of Yu-Gi-Oh!, so I've got to give you something fun.

You Feng: "Kaiser! Let me teach you how to play Cyber Style! I'll send my entire deck straight to the graveyard!"

Judai Yuki: "You Feng is the strongest duelist I've ever met."

Seto Kaiba: "You↑ Feng↓, come duel me!"

Aki Izayoi: "You Feng saved me. He's my hero."