Jakotsu is an openly homosexual fighter of the Shichinintai who wields a sneaky sword named "Jakotsutou." He was placed third in command and was the first member to come into contact with Bankotsu before the Shichinintai were assembled as a group. Jakotsu and Bankotsu had a close relationship, with Bankotsu trusting him implicitly. After hearing about InuYasha from Kohaku, Jakotsu developed a bloodthirsty fascination with him that was slightly sexual in nature. He spent most of the arc trying to find, battle, and kill InuYasha. When he met InuYasha, Jakotsu would often swoon and protest when denied confrontation. He also became enraged when Sango interfered in his first conflict with InuYasha and at one point openly said that he found Miroku good-looking too.
Jakotsu always looked for an opportunity to fight against InuYasha. He finally got a chance inside Mount Hakurei when InuYasha was reverted to his hum