
Quick answer — Ryou Naitou voices Rei Sagami in Kodocha, Naomi Minamoto in capeta, Noshiga in Kakurenbo: Hide and Seek and 15 more characters.
Ryou Naitou voices Rei Sagami (Kodocha), Naomi Minamoto (capeta), Noshiga (Kakurenbo: Hide and Seek), Yasushi Furuya (Space Brothers), Taiga Okajima (Assassination Classroom), Ken Joshima (REBORN!), Koharu Konjiki (Tennis no Ouji-sama: Zenkoku Taikai-hen Final), Yutaka Takenouchi (Cromartie High School) and 10 more.
Rei Sagami is voiced in Japanese by Ryou Naitou.