The truth was, Kaiba Seto was out of Jounouchi's league. He was smarter than Jounouchi could ever hope to be.
But, even still, Jounouchi dared to challenge him. Because for all their glaring differences, they were strikingly similar in many ways.
Jounouchi was just as persistent and defiant. And they both had things they desperately wished to protect, whether it be against sibling kidnapping baddies or for their own path.
Jounouchi would keep challenging him till he became strong enough to beat him. And even if he didn't, it'd be worth the challenge as he had faith and friendship on his side. Kaiba was learning these things too.
One day they'd come full circle. With Jounouchi fighting him as a comrade. All while having fun along the way.
Author's Note: In a similar vein to pieces I've written here before but I wanted to return to them after watching DSoD.