
Quick answer — Risa Hoshina voices Ren in KONOHANA KITAN, Iu Shindou in I'm Standing on a Million Lives Season 2, Roko Sekino in Dropout Idol Fruit Tart and 4 more characters.
Risa Hoshina voices Ren (KONOHANA KITAN), Iu Shindou (I'm Standing on a Million Lives Season 2), Roko Sekino (Dropout Idol Fruit Tart), Rosetta (Lapis Re:LiGHTs), Youjo (Pop Team Epic), Carla Norad (By the Grace of the Gods), Zabine (If It's for My Daughter, I'd Even Defeat a Demon Lord).
Ren is voiced in Japanese by Risa Hoshina.