Kazuma Kuwabara

Kazuma Kuwabara (桑原和真, Kuwabara Kazuma) is the second toughest student in Sarayashiki Junior High School and is always trying to usurp Yusuke Urameshi's position as the toughest. He develops feelings for the ice apparition, Yukina, though it becomes difficult since she remains oblivious of them. He is voiced by Shigeru Chiba in Japanese media and Christopher Sabat in the Funimation dub. Lex Lang provides the character's voice in the Media Blasters dub, Cliff Lazenby in the US Manga Corps dub, and Russell Wait in the Animax dub.

He has a very high Spirit Awareness for a human, allowing him to sense Yusuke after his death. He develops the ability to create a Spirit Sword (霊剣, Rei Ken, Aura Sword in the Viz translation) out of his own spirit energy. He originally needs a physical base to channel it through, but he eventually trains it to the point where he can create it out of pure energy, elongate it at will, and create two at the same time. He later develops the Dimension Sword (次元刀, Jigen Tō, lit. Dimensional Blade), which allows him to slice through dimensional walls and open portals to other areas.

Source: Wikipedia