 "Futari no Elder" was ported to the PSP with the adult content removed.The story follows Chihaya Kisakinomiya, an androgynous male, who transfers into the all-girls school that was the setting of "Otoboku".A manga adaptation of "Otoboku" was serialized in ASCII Media Works' "Dengeki Daioh", and a manga adaptation of "Futari no Elder" was serialized in Kadokawa Shoten's "Comp Ace".