Koroshi Korosare Sankaku Kankei ni Watashi ga Ima kara Hairun desu ka?

Kohaku is a girl who spent her junior high school years as a loner and dreams of living a fulfilling life in high school. However, on her first day of school she falls down the stairs and ends up hospitalized for a month! This means that everyone besides her has already formed a group of friends at school... In order to avoid being a loner, she summons up the courage and calls out to the only odd-numbered group in...