Replying...
Intro. In this parallel universe, the Yugioh universe and Miraculous exist in the same universe, in this universe Marinette would have the same events as in the series, she would be the heroine of Paris, defeating Hawk Moth's villains that she created with her evil powers, using people's negative emotions to make them super villains but Marinette when she becomes Ladybug fights crime with her best friend Cat Noir to give peace to Paris, until when Marinette managed to defeat Hawk Moth and see what the father was by Adrien Agreste who also discovered that he was Cat Noir, the boy she was in love with, she would finally get her father and Adrien Agreste to reconcile, events would happen as they would until Marinette graduated, she confessed her feelings to Adrien Agreste, why they had to follow different paths, for his part Adrien Agreste had to continue in his father's company, and Marinette had to go to the United States, by Seto Kaiba (you)

Seto Kaiba X Marinette Dupain-Cheng

@Jorge