One interesting concept could be the combination of different character abilities from Yu - Gi - Oh! with the unique elements of the Infernity archetype. For example, seeing how a Yu - Gi - Oh! protagonist might use Infernity cards in a new and creative way. Another concept could be the exploration of the Infernity realm within the context of the Yu - Gi - Oh! universe, perhaps with new duels taking place there.
Yugi Moto is often featured. He's a very popular character in the Yu - Gi - Oh! world, and in the crossover fanfiction, he might be the one to encounter the Infernity cards or be involved in duels related to them. Another one could be Kaiba. His competitive nature and love for powerful cards could lead to him being interested in the Infernity archetype.
First, decide on the length and style of the hair. Then, use light and shade to give it depth. You can also add accessories like clips or bands to make it more interesting.
Maybe he enjoys a stack of pancakes with maple syrup. That's a classic and delicious breakfast option. Or he could have some fresh fruit and yogurt for a healthier start to the day.