Atem lives, and this is lovely, but not the crux of it. The problem is that the other one does too.
"Why don't you ever write me any letters? I'm dead too, you know. I might even decide to write back."
Yami Bakura's plan from Duelist Kingdom succeeds, and he takes a new host body. Mostly succeeds, anyway. Maybe with a few unexpected hiccups. Mokuba Kaiba makes a new friend.
Yugi tests out the beta for Kaiba's new Duel Links project, and finds something he didn't expect.
The dinner table at the Kaiba Manor had exactly three occupants. Seto Kaiba, sitting tall at the head; Mokuba Kaiba, ignoring the vegetables on his plate; and Noah Kaiba, in holographic form, him and his dinner projected out of Duel Disk left in the center of the table.
The final scene of Dark Side of Dimensions goes differently. Kaiba doesn't make it to another dimension, and to his shock stays firmly in ours, because someone on the ground pulls the plug. Mokuba isn't a little kid anymore, and he's not going to sit back and let his brother throw himself into the great unknown. But is saving Seto Kaiba from himself going to be that easy?
Yugi Muto likes straps and buckles and leather and mesh and spikes, hair dye and the color black, and every day he chickens out right at the door and puts on his uniform instead.
Seto Kaiba goes to KaibaLand, and waits in line.