Quick answer — Emiri Iwai voices Tsumugi Wenders in Summer Pockets, Koharu Senjuin in Encouragement of Climb: Next Summit, Yuri Hanaoka in The Dreaming Boy is a Realist and 1 more characters.
Emiri Iwai voices Tsumugi Wenders (Summer Pockets), Koharu Senjuin (Encouragement of Climb: Next Summit), Yuri Hanaoka (The Dreaming Boy is a Realist), Nami (AFTERLOST).
Tsumugi Wenders is voiced in Japanese by Emiri Iwai.
