"According to a interview with Gen Urobuchi, the character Madoka was based on Yunocchi from Hidamari Sketch (An Aoki Ume creation), to the extent that he was prepared for seiyuu Asumi (Kana)-san (Yuno's seiyuu) to voice Madoka."
Oh.
OH.
O H !
Well, to be fair I've always drew a connection between the two characters and I've always found them similar, but I always draw connections between characters anyway. Like, I've even compared Akari Akaza and Nishizumi Miho (by varying leves) to each other and the two characters mentioned above. But I've never really thought of it that way. To be fair, the other characters in both Madoka Magica and Hidamari Sketch aren't really that comparable. Mami does look like Miyako, and same goes for Sayaka and Sae, but that's it. And yeah, maybe I shouldn't be surprised since Madoka Magica and Hidamari Sketch share the same character designer anyway.
