I'm Coil: Sayu

What is 'the thing'?

I entered my brother's room without looking at the thing. I put another chair at his study table and sat down in it.

That thing did not scare me anymore. Especially after I understood that it were friends with my brother from their small conversation I heard before.

Something's is not right.

"Hey, Light, don't you close your door always?" I asked.

He turned to me and said, "I am not the one studying Sayu, and it's you. So I don't have any problem if it is open... I don't have to concentrate so much to help you."

"Oh. Okay then, let it be open," I said and opened my math book.

I tried solving a problem. But I ended up getting the wrong answer. This is not new for me; I was very bad at numerical calculations from the beginning. But it is not like I got used to it. It may have been years like this with me in mathematics, yet it frustrates me every single time. I sighed internally and stretched myself. When I was about to ask Light to check where I went wrong, I noticed that his head was turned to the thing.

Light was looking at that thing and I was looking at him.

"What?" he said as he saw me staring at him.

"What are you looking at? Is something there?"

I asked him playing innocent. I wanted to see what he has to say; after all he has kept his head turned in that direction for so long.

.

.

.

.

.

"You didn't get the right answer, did you?"

What the hell? He made me wait for a two whole minutes and then this is what he comes up with?!

I thought and I wondered when he noticed me stretch out. I thought I caught him off guard.

"Yes. Check and tell me," I said as plain as he did as I moved my book along with a pen in its rift towards him.

"Hmh hmh hmh..."

The thing chuckled, probably at me and Light, and I had to keep my itch not to turn my head to glare at it. I looked at my brother who seemed not be bothered by it at all. Well, he was like that from the first.

"Don't you have anything to say to me? Huh, Yagami Light?"

What?!

Is it trying to piss my brother? And if he talks to it in front of me, I will know about the thing... So he has to keep his calm. That thing is giving my brother a tough time. Little does it know how cool my brother can be when it comes to things like this.

I retracted my attention to Light when he tapped my book with the pen.

"Here, explain me how forty-five upon forty becomes nine upon five?"

I looked into the book where the tip of the pen ended.

' 45/40 = 9/5 '

...is it not correct? "What's wrong with that?"

I turned to him as I asked. Forty-five by forty is nothing other than nine by five, right? But his expression changed into one like he is troubling himself so much not to laugh at me.

"Sayu.. just check it again."

I checked it again. But I felt like everything was correct.

"Stop playing. I checked it three times already and this is the fourth. I know there is nothing wrong there."