
Quick answer — Mami Shitara voices Yumeha Togashi in Love, Chunibyo & Other Delusions, Yuu Nakaida in Tonari no Seki-kun: The Master of Killing Time.
Mami Shitara voices Yumeha Togashi (Love, Chunibyo & Other Delusions), Yuu Nakaida (Tonari no Seki-kun: The Master of Killing Time).
Yumeha Togashi is voiced in Japanese by Mami Shitara.