I finally remember

It was the year 1999 and I had just turned 17 a few months ago. I was coming back to home from my school. Naturally my twin sister and I went to the same school, but due to our differences I avoided her all the time. The school was at walking distance so it was convenient for us to go separately.

I had more friends than her and I avoided her most of the time. Today was a bit different though, she had to stay back for some study purposes. I didn't bother ask what purposes. I wasn't dumb or anything, but what's the point of being smart when you are always overshadowed by your genius sister. 

For some reason I had to come back at school, I did not remember clearly but it was because of something I forgot. On my way back to the school I heard a high pitch scream in an alley. I couldn't help but wonder if it will be alright to check that out. After a moment of careful thinking I decided to check it out, I was careful so that I was not seen.