AKB48's sub-unit Watarirouka Hashiritai 7 will be appearing in Crayon Shin-chan for two episodes on Mar 9th and 16th.
Mayu Watanabe, Aika Ōta, Haruka Nakagawa, Ayaka Kikuchi, Mika Komori, and Misaki Iwasa will appear as themselves for Uchū Kazoku Nohara Da zo (We're the Nohara Space family) story arc. As the title suggest, Watarirouka Hashiritai 7 will play as aliens from Warota planet.
Aside from their anime guesting, Watarirouka Hashiritai 7 will also sing for Crayon's Shin-chan 20th movie, Crayon Shin-chan: Arashi o Yobu! Ora to Uchū no Princess, which will be released on Apr 14th.
Hirajima Natsumi won't be participating for this project.