Inuyasha is the son of a dog youkai and a human woman. Persecuted throughout his childhood due to his halfbreed nature, he sought to use the Shikon Jewel to become a full youkai, but fell in love with the Jewel's human guardian, the miko Kikyo. Fifty years prior to the start of the series, Kikyo sealed Inuyasha to a tree with a magical arrow; when Kagome releases him, he resumes his mission to obtain the Shikon Jewel, which requires him to team up with Kagome to track down the broken Jewel's many shards.