Quick answer — Hitomi Sekine voices Celina in Good Bye, Dragon Life, Koyuzu Koganei in Otaku Elf, Eris Seifort in Berserk of Gluttony and 3 more characters.
Hitomi Sekine voices Celina (Good Bye, Dragon Life), Koyuzu Koganei (Otaku Elf), Eris Seifort (Berserk of Gluttony), Kirue (Re:Monster), Mizue Tsuyukusa (Rokudo's Bad Girls), Ryouko Suzunone (Shinobi no Ittoki).
Celina is voiced in Japanese by Hitomi Sekine.
