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Challenge 1-nensei de Kakkoii 1-nensei ni Henshin!
Challenge Ichinensei de Kakkoii Ichinensei ni Henshin! ／ Question Fairy ／ チャレンジ1年生でかっこいい1年生にへんしん! ／ チャレンジ1年生でかっこいい1年生にへん... ... Show moreDescription
An OVA produced to promote the Shinkenzemi elementary school course was widely distributed throughout Japan by direct mail. Although its intended audience was kindergarteners, the video attracted a large number of Hatena Yousei fans in the online community, making the character popular among MOE enthusiasts.