Jonouchi is a former street tough and a Grade 10 student at Domino High. His two best friends are Hiroto Honda and Yugi Mutou, the latter of whom he shares a special bond of friendship with. Jonouchi isn’t afraid to get his hands dirty in order to protect himself or the people he cares about. He isn’t the smartest, prone to saying and doing things without thinking them through, he’s also a gigantic loud mouth. Beneath his street tough attitude and his loud disposition is a guy who will do anything for his friends.