"Hey, Mr. XXX, do you want to go back?"
A boy with silver-blue hair said to me, "I can send you back."
"I want to go back! No matter the price, as long as I can see him again!" I heard myself answer. The boy smiled and said, "Sure, sure! Got it. I'll take you back."
His ability lets him transform using Yu-Gi-Oh! cards. He channels his own power into a card to become a monster. Once activated, the cards float beside him, so there's no need to worry about them falling or being stolen. If they are more than ten seconds away from their source, they automatically return to his side. He has cards from every generation of Yu-Gi-Oh!, and can transform into the characters, using their decks as well as those of their friends.
He's reborn~ This might get abandoned, and I haven't finished watching the fourth, fifth, and sixth Yu-Gi-Oh! series or My Hero Academia, so there may be mistakes. Please bear with me.