Chapter 21 episode 135-136
Yugi won the duel between Seto which means he will face Marik. Everyone ran to Yugi including Joey. When Luna saw Joey, she ran to him and hugged him. However, it was short because Seto insulted the pack. Joey told Seto to duel him. Luna became between them and blocked each other from attacking.
"Oh, oh, oh, Joey, Seto, why don't you take a breather and let Yugi and Marik duel." Trying to calm them down, mostly Seto.
"Thanks Luna but I can't take Seto insulting us like we are insects."
"Luna, stay out of this, you are no importance here." Luna steps back in shock.
"Oh, oh, you know what, Joey will defeat you and we will all laugh." She turns to Joey. "Defeat him!" Joey and Seto went to the platform.
"Aren't you Seto's girlfriend?" duke asks.
"No, but even if I was I WOULD WANT HIM TO LOSE!"She says. Seto looked at her then at Joey.