So, again this has happened years ago in middle school.
Many times after school, I would walk home with one of my friends and we would watch anime, eat pocky and ramen at her house until the evening.

So this happened sometime in the winter, during the year in grade eight. So, it gets dark and cold at 4:30 in the afternoon. We always kept the lights off as we watched anime too.

So, one winter evening while the sun was setting, we were watching anime like usual. Her room has large mirrors next to her bed and another mirror above the TV, so I can see above and behind myself. While we were watching an anime, I see this large black shadow fly slowly over my head.

I don't think I told her exactly what I saw, but I remember saying something along the lines of "did you just see something?" I might have told her a while later that I saw a shadow float above us, but I don't fully remember.

But then again, she did once tell me that there was a tall figure in my room starting at us during a sleepover.. [refer to: black shadow part 2]