Quick answer — Reina Aoyama voices Nand no Otouto in To Your Eternity, Roddy in Moriarty the Patriot, Natsumi Kurobe in My Senpai is Annoying and 3 more characters.
Reina Aoyama voices Nand no Otouto (To Your Eternity), Roddy (Moriarty the Patriot), Natsumi Kurobe (My Senpai is Annoying), Soo-Jung Choi (Lookism), Maiko (Kiyo in Kyoto: From the Maiko House), Mao Amihoshi (Mebius Dust).
Nand no Otouto is voiced in Japanese by Reina Aoyama.
