Obsession- a yandere story

Chapter 1:

It all started with an umbrella. It was a rainy afternoon and I (Aiko Nakamura) was the last person to the leave school. I had forgotten my umbrella that day (typical me) , so now I have to run the whole 30 minute commute to the train station I thought as I watched the rain drip from the roof onto the cold concrete. Just as I thought that I was going to have to walk to the train station soaked to the bone Kaito Asahi (a boy in my English class) walked past me and dropped his umbrella beside me and ran off with his blazer over his head. I was confused at first and so shouted "Kaito you dropped your umbrella!" but he didn't reply. I took the umbrella and decided that I would give it back to him the next day. When I got home I decided to message him, it read: hey I think you dropped your umbrella I'll bring it to school tomorrow. Did you mean to drop it? he replied a couple of minutes later saying "ok thanks. And yeah." Did. He. Just. Say. That?! He meant to drop the umbrella! Yeah I think that's how it all began. My 'obsession' if you will. On my one true love Kaito.