The Lilith I didn't Know

"Nee-chan?!" I exclaimed as I wasn't expecting my sister to appear from behind the door. She was looking at me with a smug smile as she opened the door wide and gestured for me to come in.

"Why are you surprised?" She asked as I was taking off my shoes. I looked at her, and replied, "I thought you're gone."

"No, no… I was at a friend's place because she had some stuff to take care of."

Yesterday she left as if she was going back to her university, but I guess it was a wrong assumption on my part. I should have at least asked her about this. I was really relieved when she left, so this thought skipped my mind.

"So… you could've at least texted me that you're coming." I said, as I walked towards my room, trying to keep my calm composure. I glanced at Lilith's face, and I could tell she was enjoying this too much.

"What? I thought you already knew." A frown formed on her face as she complained.