Captain of the Kendo team. Ryoko and Azumi are fighting for his affections. He moves away in the middle of the manga (something that has not happened in the anime).  wikipedia

At Daimon High School, kids settle their disputes by dueling with each other in the school's official K-Fight battle arena. Ryoko Mitsurugi, samurai girl and undefeated K-Fight champion, is called upon by a mysterious Priestess to protect the Earth from an invasion coming from the alternate universe of Solvania. She must face battles that will test her skills, her friendships, and her heart in order to find her true strength as a samurai warrior.
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(Source: Anime News Network)

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Rafael Antonio "Tony" Olivier is a Puerto Rican-born American voice actor best known for voicing Rick Hunter from Robotech, Lancer from Fate/stay night, and Arsène Lupin III from Lupin the Third. He helped produce the live action shows Mighty Morphin Power Rangers and VR Troopers.

In a school where martial arts are standard curriculum and disputes are settled by officially recognized duels, Ryoko takes on all comers. As the #1 fighter at Daimon High, Ryoko's battles to defend her position never end and "Finals" take on a whole new meaning. 
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(Source: Tokyopop)

Tatsuya Shishikura