Curse of the Wolf:

The others woke at Inuyasha's cry and there stood Akala in her human form with no wounds, no pain, fully healed, she bowed to them.
"I thank you for your help,"
"It's the priestess from the village," Shippo spoke jumping on to Kagome's shoulder.
"Wow it is, this is so weird!"
"Enough talk Kagome, just who exactly are you, what are you?" Inuyasha yelled, Akala frowned then whispered,
"Cursed by night, human by day, I am Akala." She then turned and walked off heading back to Lord Sesshomaru, she hoped he would understand what had happened yet she stopped as Inuyasha jumped in front of her.
"You aren't going nowhere until you answer my question!" She blinked and looked back at the others as they neared,
"How did you become... cursed?" Kagome asked.
"50 years ago..."

(Flash Back)

She limped from the burned down village, holding her chest where her heart bled she gasped wincing in pain as she walked with her spear like a walking stick. Demons attacked her village she was unable to defeat them but managed to get away yet with this death wound she wouldn't last long. She collapsed against a Sakura tree and panted heavily,
"Oh Holy spirits... I have failed…"
"Not completely," she turned gasping as she saw a great White wolf looking down at her from a hill, she tried to raise her hand to summon her spiritual power.
"Now now child I mean you no harm only to offer a gift,"
"Demon be gone!" Her powers flared and the wolf dodged the bolt he growled,
"Well now you don't deserve a gift but a curse will do just fine!" He barked and from his body emitted a bright light and it was absorbed into Akala's body she screamed as the sun had set she transformed into the black wolf. She looked down at herself felt no pain, she was completely healed she looked at the angered wolf,
"By night a wolf, by day a human your power birthed from the beast of earth!" The wolf vanished and she sat there alone in the form of the demon wolf only did morning come again did she return and realize she was cursed by the demon wolf.

(End FlashBack)

Inuaysha and his group all thought of her story it was amazing and tragic to them and Sango asked,
"Wait you said 50 years ago so that means.... but you look like you are in your twenties," she looked down.
"You're immortal like a demon you age slowly like them now," Inuyasha answered and Akala nodded.
"This is true; this is my curse which was to be a gift to keep me alive. I live with it and accept it."
"Can it be broken?" Kagome asked before Akala could answer a voice came from behind them,
"Why would you do that?" They turned to see Lord Sesshomaru.