Quick answer — Rin Kusumi voices Hiyori Minagi in Slow Loop, Kaoru in I Shall Survive Using Potions!, Shio Minamo in You Can't Be In a Rom-Com with Your Childhood Friends! and 5 more characters.
Rin Kusumi voices Hiyori Minagi (Slow Loop), Kaoru (I Shall Survive Using Potions!), Shio Minamo (You Can't Be In a Rom-Com with Your Childhood Friends!), Emily Brown (My Unique Skill Makes Me OP even at Level 1), Hina Aoi (The Yakuza's Guide to Babysitting), Ohagi (The Yakuza's Guide to Babysitting), Lily (Saint Cecilia & Pastor Lawrence), Lauren Laraiya du Luvierte (Skeleton Knight in Another World).
Hiyori Minagi is voiced in Japanese by Rin Kusumi.
