
Kazuma Kuwabara is the second toughest kid at Sarayashiki Junior High School, behind Yusuke Urameshi. He has a soft spot for kittens and an iron code of honor. At first he has a crush on Botan, but later has a major crush on Yukina, Hiei's sister. His rivalry with Yusuke would always end with him being on the losing side but as time went on, both have become great friends of each other and fight along with each other really well, although they constantly disagree with each other. His unique ability is sensibility to Reiki, or Spirit Awareness. He can sense when ghosts are around and see demons and spirits while also predicting the thoughts or motives of others. With an exception to Shinobu Sensui, he possesses the highest Sprit Awareness of any human. Also, he possesses the unique ability to produce a spirit blade (Rei Ken or Spirit Sword). Although at first he needed to use a physical identity (ex) wood) in order to produce the sword, he later on trained to be able to make one without any need of items. Even later, he is able to extend the sword to various lengths and is also able to produce two in one hand. Throughout the series, he gains the ability to produce various spirit swords.
Even though Kuwabara is the weakest and dumbest of his team, he is also the nicest member.
Attacks:
- Rei Ken (Spirit Sword in the English Dub) is Kuwabara's signature attack, where he creates a sword made of his Reiki. Its strength depends on how much Reiki Kuwabara uses. It is first used in the Genkai Tournament when Kuwabara holds a piece of a broken sword from a special spiritual sword used by Musashi, the opponent he is fighting. It causes this weapon to emerge. After the tournament is over, Kuwabara does some training and learns how to control it at will without needing the broken sword piece. Since Kuwabara is not trained as a swordsman, he lacks the grace of Hiei's sword strikes, and swings rather clumsily. Later on, Kurama teaches Kuwabara how he can manipulate his Rei Ken with his mind, a technique which comes in handy during the Dark Tournament.
- Nobiyo Rei Ken (Spirit Sword Extend) - When Kuwabara learned how to control his sword, he developed this move as well. It allows Kuwabara to extend his Rei Ken and be able to attack enemies from a distance or increase his jumping distance by using it as a pole vault. In the English Dub Kuwabara activates it by saying "Sword get long."
- Rei Ken Ni Tôkai Ryû (Spirit Sword Twin Blade) is known as Double Spirit Sword in the English Dub. During his training before the Dark Tournament under Kurama and Hiei, Kuwabara develops this technique, where he can materialize two Rei Ken at once. It is used only during the first match of the first round against Rinku, a fighting child of Team Rokuyukai (English anime).
- Tameshi No Ken (Sword of Trials) is known as The Trial Sword in the English Dub. Before the finals of the Dark Tournament, Suzuki, (Suzuka in the English Dub) the former leader of Team Uraotogi, gives Kuwabara a sword hilt which once belonged to his teammate Shishiwakamaru (Shishi Wakamaru in the English Dub). Kuwabara uses it during his match against Elder Toguro. It creates a tremendous drain on Kuwabara's energy, but allows him to produce a sword that is two to three times stronger than normal. It also allows Kuwabara to shift the energy into whatever shape he desired. He uses this ability against Elder Toguro, who could not be harmed because he could shift his vital organs around his body. Kuwabara turned his sword into a paddle-like weapon and smashed him all at once. This attack was named Kyodai Reikibou (Giant Spirit Energy Staff) or Spirit Fly-Swatter.
- Rei Shuriken is a technique where Kuwabara produces small bolts of energy from his hands, similar to shuriken. It is used only against Elder Toguro in the Tournament Finals. After Toguro notices that Kuwabara doesn't know about Genkai's death, he uses molding capabilities to replay the event, but with the facts altered a bit for his personal amusement. This angers both Yusuke and Younger Toguro. In the end, Kuwabara uses this attack against Elder Toguro because he made fun of Genkai's death.
- Jigen Tô (Dimensional Blade) is called Dimension Sword in the English Dub. For the first half of the Chapter Black Storyline, Kuwabara does not have any of his powers. When he regains his powers, he gains this technique, although he is not able to summon it willingly. Not only is it more powerful than his normal sword, but it also allows him to slice through dimensions. He is able to dispel psychic territories (such as that of Sea Man), powerful and ancient entities (like the Ura-Otoko, a dimensional being tamed by Itsuki), or the barrier sealing off the Demon World.