Author's note! Leave a comment or no more chapters. Simple. Also, I own nothing.
Book: 1-3: Training and letters
A month had passed since the death of Hermione's parents and she was now officially Lily's ward as per her parent's Will (they made one soon after finding out about the supernatural, worried about attacks from Dementors and dragons). It also hadn't came as a shock that once Sirene had merged with Hermione, Kiam had shown up a few days later to serve the girl in any way he could. Lily always kept a close eye on the armadillo demon though in case of it being a trick. To avoid detection, Kiam had shrunk himself to the size of a Labrador and followed Hermione around the house, often asking her which book she needed or cleaning up any mess made in her room or the Library, often throwing insults at Amon for joining with Harry but praising Harry for keeping the demon general in line.
Currently, they were training in the bomb shelter located below the basement. It was a large rectangular room, high enough for their demon forms but not enough for aerial combat training. Lily, in her human form was teaching Hermione, with Kiam's help, how to detach her arms and control them independent of her body, this carried over to her human form when she accidentally transformed mid training, her left arm a stump as it's demonic form rocketed around the room, controlled by the antenna extended from her blonde eyebrows. This led to a demonic harry gawking in shock as Kiam began to boast loudly.
"Mistress is strong! Able to be a threat even in this form!" The demon boasted proudly.
"Uh, mum? Is she going to be able to reattach that?" Harry asked in concern as he ducked under another pass of the flying arm, his tail barely missing the arm due to the height of his form.
"Likely yes. And be careful, there's only so much an epski can fix." Lily cautioned from the other side of Magical Bombarda proof glass as she wrote down notes for how to improve their skills.
"Ah! Careful mistress!" Kiam yelped as the arm struck his armored side, clattering to the floor as Hermione lossed concentration.
"Sorry Kiam." Hermione panted in exhaustion as her eyebrows returned to normal, albeit the had been permanently blonde as was her fringe since her transformation. They'd been doing this for almost an hour and a half now, her current limit, while beyond most human and wizard standards was only a short time to demons. Lily could stay in combat for twelve hours and not get tired, harry could only manage six hours at the moment and Kiam could go a whole day.
"Mistress, it was a honest mistake, no harm done." Kiam replied as harry reverted to human, wiping the sweat from his brow. Hermione lifted her detached demonic arm and put it against her stump where it shrank to human size and form, fusing back to her skin. She shuddered, she could never get used to it.
"Harry, you okay?" Hermione asked, rushing over to him, his arm was cut at the elbow which was bleeding profusely.
"Yeah, just a knick." Harry replied as Lily sighed applied sterilisation and cleaning charms at it before an Epski. Harry didn't even flinch, already used to the spells. As they left for the basement, they could all hear the tapping of talons on glass and hooting, upon entering the main house, they noticed two brown owls with letters on their legs. One carrying two.
The first was a letter from Amelia Bones, one of Lily's friends and head of the DMLE about a demon attack from last week she helped with and two from Hogwarts, one for Harry and the other asking Lily to join as a teacher. They finished reading as a knock was heard at the door. Lily opened it to reveal Minerva McGonagall.
"Lily?" McGonagall asked in shock.
"Hi professor. Here to see Hermione I take it?" Lily asked, giggling at her old teacher's expression as she nodded mutely. "Hermione! A teacher is here to see you, it's McGonagall from Hogwarts."
"Hold on! Ah, Kiam! Hey! I wasn't finished with that!" Hermione shouted back. Lily chuckled as she led McGonagall to the sitting room down the hall where Hermione was fighting Kiam for a book.
"Mistress has a guest! Its rude to ignore guests mistress!" The shrunken demon rebutted as his tail wrapped tighter around the book. McGonagall gawked in open shock at the demon and Hermione arguing over a book.
"I wasn't even finished page one yet!" Hermione argued back.
"Hermione let Kiam put it away." Lily stated calmly. Hermione sighed and begrudgingly let go of the book, letting Kiam place it on the bookshelf. Lily then turned to McGonagall with an apologetic smile. "Sorry McGonagall, Hermione gets rather attached to her books."
"WHAT IS THAT?!" McGonagall cried, pointing her wand at Kiam in fear. Lily was glad for the silencing ward again.
"I am Kiam. I serve my mistress." The demon replied simply. As he pushed up a chair using his shoulder tusks.
"Lily? What is going on?" McGonagall asked in confusion. She of course knew about devils and demons, the unspeakables told the wizarding community a few years ago.
"Let me explain..." And explain they did. They told her about Lily's father, the demon Saylos, the pact with Amon and how Sirene attempted to possess Hermione and how Kiam chose to serve Hermione to honor his late love interest. By the end, McGonagall was floored.
"Bloody hell." McGonagall's accent came in thick. "Te poor Lass." She simply handed Hermione the letter and downed the bottle of fire whiskey Kiam gave her. "I'm going home. Here, you sort this out lily." The Scottish woman moaned before walking off, out of the front door then catching the night bus.