On the fifth night, my mother died.

Her legs were forcefully torn off and thrown on the ground, while her upper body remained stiff on the bed, tears streaming down her face, filled with fear.

The black oil on her face had been washed away, layer by layer, whether it was wiped off last night or before, I didn't know.

My brother wasn't in the room.

But I felt that he was still alive.

I mustered up the courage to search around my mother's body, but I couldn't find her oil bottle.

"What are you looking for?"

It was my brother!

The black oil on his face had disappeared, as if he had carefully washed it, not even a trace in the folds of his flesh.

After my mother's death, he immediately went to wash his face.

"Aren't you going to wash up?"

"I'll apply new oil at night anyway."

The liquid inside his oil bottle was swirling again.

I looked at my brother and felt afraid, especially now that his expression was not one of anger, but a terrifying calmness.

I stared at my mother's corpse, and my brother chuckled, his fat body sitting next to her, lifting up her stiff upper body.

"Do you know how many times you need to apply oil at night so as not to be discovered?"

My brother raised a finger. "Three times."

"Even if my heart is calm, I still sweat, so I have to apply oil frequently when it runs out."

"That dead woman has been lingering outside our room, waiting for any opportunity to come in and try to break my legs."

I trembled as I spoke, "So you stole Mom's oil and let her die for you?"

"I also wanted to test it out. If she took revenge by killing someone, would she leave?"

"You must have had a peaceful night last night, right?"

I've just realized it now.

My brother is not a fool at all. He's an absolute madman!

"If you run out, you have nothing to say to me, and I'll share mine with you! How could you kill someone? Mom was so good to you..."

"Then guess, how many more times can I use my oil?"

Seeing that I didn't answer, my brother continued on his own, "Only enough for one more day."

"During the first seven days, I'll trouble you."

The oil only works when used after dark, so my brother was confident that he could snatch my oil.

We were confined to this small square space, and since I couldn't defeat him, I had no choice but to let him do as he pleased.

My brother, he intends to use me as a scapegoat for the seventh night.