Kagome realizes that the spirit world is an illusion in order to find out the location of Inu no Taisho's tomb. InuYasha overcomes the illusion due to Kagome's assistance, however Sesshomaru finds out that the tomb was hidden in a Black Pearl deep within InuYasha's right eye. Sesshomaru activates a portal from the Black Pearl, as InuYasha and Kagome follow right behind him. Inside the tomb therein lies Tetsusaiga, Inu no Taisho's legendary sword, for which InuYasha fights Sesshomaru for its possession.