"She knew that I was here?", he raised his voice and asked this.
"What the-", he could hardly keep calm.
*gulp*
'But how did she know that I entered her room?', he asked himself.
'Did I leave behind something that made her sure that I had entered the room?'
But that wasn't the biggest thing that he was surprised about. What baffled him the most was that she had written it on the calendar.
It was as if, she knew that he had seen the calendar. More than that, she had written on it as if she was expecting him to enter the room yet again after she left!
"Just what is she?", he asked himself.
It was literally as if she had predicted the future or had seen the future for herself.
'But I wonder...'
'What this mark symbolize?', when he came to know that his sister had found out, he couldn't help but panic.