Instant Teen: Just Add Nuts(おとな に ナッツOtona ni Nattsu, lit. Nuts To Make You An Adult) is a Japanese shōjo manga by Haruka Fukushima. The manga was published in English by Tokyopop; the Tokyopop version of the manga is out of print as of August 31, 2009. In 2009, a spinoff was serialized in Nakayoshi called おとなにナッツー(Otona ni Nattsu nilit. Nuts To Make You An Adult Two), with different characters; it has just one volume.