The first novel of Ikebukuro West Gate Park by Ira Ishida was published, introducing the story and characters to the public.
The television drama adaptation of Ikebukuro West Gate Park was aired in Japan, boosting the franchise's popularity.
A manga series adaptation of Ikebukuro West Gate Park was published, expanding the franchise into the manga medium.
The anime adaptation of Ikebukuro West Gate Park premiered, bringing the story to a new audience through animation.