Jewel's demon (四魂の玉を生み出した合体妖怪, "Combine yōkai spawned Shikon no Tama") is the incredibly powerful dragon yōkai residing in the Shikon Jewel, and from his spirit was born the evil called Magatsuhi. In the epilogue, after Naraku's death, he became the ultimate enemy of Inuyasha inside the jewel.