Historias de Murderoryandere

A new girl came to school a mystery, or so we thought she was new. One day she looks at me.... a random stranger, the popular kid..... she waves. I watch her and wave back... We start hanging out until I notice every other girl I talk to does not go to school anymore. I notice my best friend Yuri stops going to school too I go to her house and I see Yuri dead and her parents and I wonder what happened Is this another Yandere story or a Murder mystery?