Once there was a legendary priestess by the name of Midoriko. She was known to be able to purify up to 10 demons at once. After 7 days and nights of endless battling she realized she couldn't beat the demon and while in the jaws of it, she used all her remaining magic to seal its spirit with hers creating the Shikon Jewel that came out of her. What wasn't known is she had a child that created a direct line of descendants and to which still live today. One of them is Emiko Adachi. Emiko Adachi knows of her ancestors. She is known for being a kind and pure-hearted person. She believes there is good in every living being. She helps anyone in any way she can. Though not all of her ancestors were humans she has abilities of a demon. Compared to her friends she was faster, stronger, smarter and healed fast when injured. She thought it was because of her priestess abilities. She was raised by her mother and never met her father. She lives with Kogome and shares a room because her mom got into a car accident. She was put in a coma in which doctors said she was most likely not going to wake up. Emiko doesn't let this bother her and remains optimistic that her mother will wake up. Emiko knows about Kogome and Feudal Era Japan and can go through the Bone Dry Well to the past. Kogome comes home midday while Emiko is woken up from a nap and Emiko knew she had another fight with Inuyasha again but she needs help from Emiko. Emiko acts confused about how to help, but Kogome knows she can go into the past. Kagome knows about what she is and tells Emiko she has demon blood in her.