Putting down the pieces of rubble that he was carrying, Inuyasha complained about Sango in bed, healing for nine days already. He said he would be up in three. Miroku said he would not be up in months. Inuyasha muttered about disturbing Sango and Miroku threw a piece of wood at him. Meanwhile, Kagome discovered that Sango was gone from her bed. Then she saw that the demon exterminator was kneeling in front of the graves Inuyasha and the rest had worked on to bury the dead. Sango held a yellow flower while telling Kagome how grateful she was that they marked the graves. She said for Kagome to call her friends over to listen to the story behind the Shikon no Tama, the Shikon Jewel. Carrying Sango on his back, Inuyasha stepped forward towards the opening of the cave after blowing Myoga off Sango's sleeve. He asked Sango to lower the barrier he had tried to get through earlier. Sango said that at the beginning, the people of her village also thought that it was some kind of spell that the demons left behind. But they found that it was the soul of the woman blocking their way. She was filled with sadness. But she would let you through if you had sympathy. Inuyasha stepped through the barrier, followed by Kagome and Miroku. When Myoga jumped, calling out enter Myoga, he got shut out. Inside, at the end of the cave, they found a scene in rock. The tableau was ancient. It was of a huge demon and in the center, a woman. Sango told the story of this formation and the origin of the Jewel of the Four Souls. War tore the country. Demons devoured the dead and the near dead. But one priestess by the name of Midoriko was able to purify the soul. She reached within the demons in order to purify their souls and render them harmless. It was here that she fought with the huge demon. The huge demon was a combination of many smaller demons. They united in hopes of destroying Midoriko. They fought for seven days and seven nights, until at last, the demon had the priestess in its jaws. This time, Midoriko reached deep within herself and grabbed the demon's soul. But that forced out her own soul, through the hole in her chest that could be now seen. She could no longer purify the demon soul, only able to capture and imprison. Both their souls are in the Shikon Jewel, still in battle. Inuyasha thought it weird for someone to battle demons by purifying their souls. He preferred fighting with a weapon. Miroku in turn explained the Shikon no Tama. The Four Souls are aramitama, megimetama, kushimetama, and sakimetama. Aramitama was courage, megimetama was friendship, kushimetama was wisdom and sakimetama was love. He teased Inuyasha about going over his head with this deep stuff. But when Inuyasha said that he wanted the Jewel for himself in order to become a full fledged demon, the spirit of the priestess Midoriko, who was considered the most powerful priestess in that era, threw him out of the cave. Sango continued the story inside the house, with Inuyasha lying on the roof. The Shikon Jewel went through the hands of many humans and demons. Sango's grandfather slayed a demon who had the Jewel, but as a price, her grandfather and many many others died. Then, the Jewel was fouled with evil. That was when they gave it into the keepings of a young priestess with extraordinary powers, Kikyo. At night, Kirara sneaked into the cave with the Shikon jewel on her neck and Myoga on her back. Myoga bundled the Jewel shards and began his climb up the stone scene towards Midoriko's chest, where the Jewel came out. But he dropped it and woke the spirit of the demon. It rose up. Kirara transformed and fought it. But she was caught. Myoga saw the spirit of the priestess also rise and wound the demon spirit with a swipe of her sword. But just as she landed, her form turned into Inuyasha's. Inuyasha had heard the commotion. Searching through Kirara's fur, Inuyasha found Myoga. Myoga lied that it was Kirara who took him and the jewel shards into the cave and that he was asleep. A growl from Kirara proved it false. Inuyasha said that he did not know why he bothered to save Myoga at all. But the flea demon insisted that it was Midoriko who saved him. Kirara looked at Midoriko with a familiar look, then curled up at the foot of the priestess's form and slept. Kagome and Miroku did further research on the priestess Midoriko and found that it was impossible for anyone to be capable of such a feat no matter how strong their spiritual powers are. She must have had help. From a demon pet, Kirara.