I didn't get any suggestions for pranks played on Umbridge, so sorry for the lack of creativity; I've got a small case of writer's block. And again, I apologize about the Ooc-ness but it's my story so with all due respect; BUGGER OFF and just enjoy the story or don't. Your choice.

I do not own Harry Potter or Nurarihyon no Mago

Chapter 10:

The rest of the week was spent tormenting Umbridge. All in all, Rikuo was having a great time. Umbridge had her hair turned pink and had her office filled with toads, a subtle message if you will. On Thursday Rikuo had made some new friends that were great at helping in his crusade against Umbridge. They were twins and he had learned that they were one of Harry's friend's brothers; they called themselves Gred and Forge and they were cunning in the way that they played their pranks out, so they were never caught and it was proving to be quite useful, but then again Rikuo was never caught either and was even more skilled than them.

***Flashback***

Rikuo was walking down the halls thinking of new ways to mess with Umbridge; it was going pretty good so far. Harry had gotten out of detention early every day this week and Rikuo was proud of the fact, but the problem was that he was having problems thinking of new ways to torture-I mean punish-the woman. As he was walking, he felt two presences behind him and spun out of the way of the color changing spell just as it flew past him.

"What are you two doing?" he said as he looked behind him at the suit of armor that he could sense the boys behind.

"Blimey mate-

-how did you know-

-that we were here?"

"Easy, I could sense you behind me before you cast the spell. Speaking of which, are you two good at pranking; I'm having a little…toad…problem that I want to get rid of."

"You've come to-

-the right people-

-Mate. We're the best."

"Good then let's start"

At this all three of them got an evil smirk on their faces as they grouped together and started planning.

***Flashback end***

All in all this week was looking kind of good and Rikuo couldn't help but smirk thinking back on the plans. His classes were going well and every time he went to Defense Against the Dark Arts, DADA for short, he felt a small amount of smug satisfaction in seeing Umbridge's flustered face. It seemed that Yoru was affecting him more and more as each day passed and he couldn't make himself feel bad about it; he was glad that he and his yokai side were in harmony, it was a small satisfaction, but satisfaction nonetheless.

After about a month he and the Trio were getting along well and they were soon to become good friends. Kurotabou had started his hand-to-hand combat classes and to his surprise many students showed up, though no Slytherins, what a surprise. They were mostly Gryffindors with a few from Ravenclaw and a few from Hufflepuff.

Soon McGonagall was treating him with less suspicion; she hated Umbridge as well and seemed to realize that the only ones capable of some of the feats accomplished were the two yokai who could turn themselves completely invisible at will; therefore she had a small liking for the shy Japanese boy. It helped that no students had showed up dead or worse yet and showed no sign of that happening either.

Rikuo was getting bored though and the days passed by slowly. Then there was the meeting with Dumbledore; hey at least there might be something interesting going on there. About a month and a half after the school year started a young boy showed up with a note from Dumbledore: Meet me tonight at 7:00. The password is gummy bear.

When the time came for the meeting he called Kurotabou "I want you to come with me Kuro, just in case he tries anything; stay invisible, I am staying in my night form though so we should be good"

"Yes, Rikuo-sama, I agree you can never be too cautious; peace is like the wind, ever changing and wavering in strength"

At this Rikuo transformed into his night form and said "Come, we have a meeting to attend"

The two went out of their portrait, both invisible, and headed towards the Headmaster's office.

Once they got there Rikuo knocked and called out "I am here Dumbledore, may I come in?"

"Yes, my dear boy, you are welcome to"

Yoru growled a little at being called a boy but proceeded anyway, entering the office to find the Headmaster, McGonagall, and Snape. (A/N: Rikuo will be called Yoru when in his night form)

The teachers in the room shifted nervously obviously remembering their previous encounters with this form of the boy. "Well, cat got your tongues or do you want something? Cause I've got stuff to do besides stand here."

"Yes, we wanted a report on how Harry and his friends are doing with the new DADA teacher?"

"How well can you expect them to react, they literally write lines on the back of their hands in their own blood. The first time I saw this, I almost slit the ugly toad's throat" he practically snarled, causing the teachers in the room to shrink in fear, for his eyes were glowing and he was leaking Fear everywhere.

When they processed what he said though, they came to their senses "WHAT? ALBUS EXPLAIN!" McGonagall shouted in outrage.

"I know nothing, young Rikuo here knows more than me"

"Call me Yoru when I'm in this form, I find it more comfortable; a nickname if you will"

"Very well then Yoru, mind explaining what Umbridge was doing?"

"Sure, I went to the detention for Harry, invisible of course, and watched to make sure nothing happened to Harry; he is, after all, my responsibility. What I saw shocked me. She had him writing lines, but instead of appearing on the paper they appeared carved on the back of his hand, written in blood. Like I said, I almost killed that vile woman; she's lucky I only did what I did."

Dumbledore had a slight twinkle in his eyes "Is this what we've been hearing about from Umbridge all the last six weeks?"

"Yup." Yoru said with a slightly evil looking smile and a glint in his eye.

"We shall have to look into the Umbridge case though; it sounds as if she is using a blood quill and that illegal and very immoral"

"Good if that is all you care about, I am going for a stroll through the woods"

"You can't do that, those woods are dangerous, not a place for a student at night."

"Ahh…but you forget, I am not a human, I am a yokai and we revel in the night. Besides, I shall have Kurotabou with me, no need to worry. Nothing out there would dare attack the Lord of the Night and if they did they wouldn't live to tell the tale. Now, farewell Professors." And with that he left to go explore the forbidden forest and have a night walk, after all the Lord of the Night had to rule over his domain.