Kuwabara is Yusuke's chief rival at Sarayashiki Junior High. Like Yusuke, he isn't the greatest student, but he is an excellent fighter. Next to Yusuke he is probably the second strongest kid in town - a distinction that he despies. Every day Kuwabara challenges Yusuke to a fight, and every day he is beaten, But this only serves to strengthen his resolve. Kuwabara is driven by an unwavering desire to be the best, and he will not rest until he beats Yusuke and proves once and for all that he is the strongest.
And who ever said that stupid people are always hated? Kuwabara isn't that dumb actually and he brings most the humor to the show. Haha, and of course you can't hate Kurama...who could ever hate him? ^_^ He's too sweet to ever hate! Hehe.
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"Regret is a different beast when you live for centuries." -Kurama