Hatena Yousei

Hatena Yousei, also known as Question Fairy, is a magical girl-themed character created as a mascot for the Japanese education and publishing company Benesse Corporation. She mainly appears in the company's promotional DVDs and edutainment materials, where she is voiced by Megumi Toyoguchi. Hatena gained a decent fan following in the Japanese online fandom because of her cute design, resulting in some fan arts in Pixiv and becoming a hot topic in videos uploaded to Nico Nico Douga. Naturally, her popularity has led her to make two appearances in 2channel's Saimoe tournament. (Source: Saimoe Wiki)