
Quick answer — Mikoi Sasaki voices Hercule Barton in Detective Opera Milky Holmes, Yuzu Hosono in TEPPEN!!!!!!!!!!!!!!! Laughing 'til You Cry, Himeno Katsuragi in D.C.III: Da Capo III and 13 more characters.
Mikoi Sasaki voices Hercule Barton (Detective Opera Milky Holmes), Yuzu Hosono (TEPPEN!!!!!!!!!!!!!!! Laughing 'til You Cry), Himeno Katsuragi (D.C.III: Da Capo III), Royal Penguin (Kemono Friends), Kururu (The Great Cleric), Sancho (Adachi and Shimamura), Yamada-san (Ms. vampire who lives in my neighborhood.), Nanana Wanibe (BanG Dream!) and 8 more.
Hercule Barton is voiced in Japanese by Mikoi Sasaki.