The 100 Girlfriends Who Really, Really, Really, Really, Really Love You is still adding girlfriends — and now a heavyweight voice to match. Rie Kugimiya joins the Season 3 cast as Yaku Yakuzen, Kusuri's grandmother and Rentaro's newest destined partner, debuting in episode 8.
Quick answer
Per the Season 3 staff, Rie Kugimiya voices Yaku Yakuzen in The 100 Girlfriends Who Really, Really, Really, Really, Really Love You Season 3 (Japanese: Kimi no Koto ga Dai Dai Dai Dai Daisuki na 100-nin no Kanojo), from episode 8. Yaku is Kusuri's grandmother — an 89-year-old added to the ever-growing roster of Rentaro's fated girlfriends, exactly the kind of gag the series runs on. Season 3 is streaming now; SenpaiRanks tracks the franchise on its comedy board.
Here's the Season 3 trailer:
The casting
Kugimiya is one of the most recognizable voices in anime — Alphonse Elric, Shana, Taiga Aisaka, Rin Tohsaka — so slotting her into a rapid-fire harem comedy as an 89-year-old grandmother is the kind of against-type gag 100 Girlfriends thrives on. The series' whole engine is escalation: each new girlfriend has to be a bigger swing than the last, and casting a legend for a grandmother role is the audio-side version of that joke.
Worth a slot?
If you're already watching, the answer is easy — it's more of the deliberately absurd energy that got you here. If you're new, this is not a jumping-on point: start at Season 1. On SenpaiRanks the franchise sits in the mid-tier of the comedy board, which is about right for a show that's pure, unapologetic gag comedy. For sharper competition on that shelf, the best shonen anime, ranked board is next door, and you can rate 100 Girlfriends yourself to see where your taste lands.
Frequently asked questions
Q: Who does Rie Kugimiya play in 100 Girlfriends Season 3?
A: She voices Yaku Yakuzen, Kusuri's grandmother and Rentaro's newest girlfriend, starting in episode 8.
Q: When does Yaku appear in Season 3?
A: Yaku debuts in episode 8 of Season 3.
Q: Where can I watch The 100 Girlfriends?
A: Season 3 is currently streaming; start from Season 1 if you're new to the series.
Q: Is 100 Girlfriends worth watching?
A: If you enjoy fast, absurd harem comedy, yes. On SenpaiRanks it lands in the mid-tier of the comedy board — a solid gag series rather than a top-of-board standout.