Bokura ga Koko ni Iru Fushigi.

Shinichi Manabe attends Seiryo High School. His father is a writer. 5 years ago, Shinichi went to see a mysterious mirage with Mio Fukamachi and Tamako Fujiomi. Mio is one year older than Shinichi and acts like his mother, while Tamako loves old samurai movies and likes to hug. The mirage really was mysterious, and they had a lot of fun. However, a week later, Mio tries to save a cat but ends up ...