100 Girlfriends Voice Actors: How Tokyo Handles the Biggest Cast in Anime History

The average anime season has maybe eight to twelve credited voice actors. The 100 Girlfriends Who Really, Really, Really, Really, Really Love You has a confirmed cast list that keeps growing with every new season, currently sitting at over fourteen named seiyuu for the main family alone, and a full supporting ensemble on top of that. Season 3 drops on July 5, 2026, adding more. So how does Bibury Animation Studios actually schedule, record, and coordinate this logistical fever dream? And what does a Guinness World Record-breaking 7,453-character monologue sound like from inside the recording booth? Buckle up, because the behind-the-scenes story of the 100 Girlfriends voice actors is almost as chaotic as the show itself.

What Makes This Show Different From Every Other Harem Anime

Most harem anime spend twelve episodes teasing whether the protagonist will pick one of his three options. The 100 Girlfriends Who Really, Really, Really, Really, Really Love You starts by telling you he picks all of them, all 100, and then spends its entire runtime figuring out the logistics of that. The premise: high school student Rentaro Aijo confesses his love to girls 100 times throughout middle school and gets rejected every single time. He visits a shrine, and the God of Love informs him that this was a divine clerical error. As compensation, Rentaro is now destined to meet 100 soulmates in high school, and the catch is lethal: if he fails to return the feelings of any of them, she dies in a horrible accident.

The show is based on the manga by Rikito Nakamura and illustrated by Yukiko Nozawa, which launched in Shueisha's Weekly Young Jump in December 2019. By March 2026, 25 volumes had been collected. The anime adaptation by Bibury Animation Studios aired its first 12-episode season in October 2023, a second 12-episode season from January to March 2025, and Season 3 is scheduled to premiere July 5, 2026, on Tokyo MX.

For the voice cast, this premise creates something unique in anime production. Each season adds multiple new named characters who need established seiyuu, and those seiyuu then need to appear alongside an ever-larger group in ensemble scenes. Season 1 had five main girlfriends. Season 2 added six more. Season 3 is bringing at least five or six new faces to the party. That is not a casting challenge. That is a scheduling war.

How Japanese Anime Voice Recording Actually Works

Before digging into the specifics of Hyakkano's cast, it helps to understand what "recording" for Japanese anime actually means. Unlike Western animation, where voice tracks are usually recorded first and animators draw characters to match the audio, Japanese anime almost always works in reverse. The animation is produced first, or at least roughed out to a pencil-test stage, and then the voice actors come in to match their performances to the already-timed footage.

This process is called atoateri (after-dubbing, or more accurately, after-recording). Anime News Network's Answerman column described the reason succinctly: scripts remain fluid throughout production, and if a schedule starts collapsing under TV deadlines, banked shots, flashbacks, and slow pans can be inserted without disrupting the voice recording schedule. Doing it the other way around would require expensive rework.

The practical result: voice actors receive scripts for each episode relatively close to the recording date. They generally do not know months in advance which manga chapters will be covered. Wataru Kato confirmed exactly this in his Guinness World Records interview, noting that the cast receives scripts episode by episode and only find out what scenes are coming next when the paperwork lands in their hands.

What makes large-cast productions genuinely difficult is not the technical aspect of the booth. It is scheduling. Every seiyuu on a show of this scale carries commitments across multiple other projects simultaneously. Rie Takahashi (Iku Suto in Season 2) voices Megumin in KonoSuba and Zero Two in Darling in the FranXX. Kaede Hondo (Hakari) has been Maple in BOFURI. Miyu Tomita (Karane) is Miko Iino in Kaguya-sama: Love Is War. Getting five of these people into a Tokyo recording studio on the same afternoon, every episode, for a 12-episode run, is a feat that makes Rentaro's own scheduling problems look manageable.

The Main Japanese Voice Cast: Seasons 1 and 2

Here is the full credited main cast across the first two seasons, with the characters they play and notable other roles that give you a sense of the caliber being assembled here:

Season 1 Core Cast

Season 2 New Additions

That is thirteen named lead performers across the first two seasons, and every single one of them returns for Season 3. Every person in that table is a working professional with packed schedules. The fact that Bibury and the production committee managed to keep the entire cast intact across three seasons, zero recasts, is genuinely remarkable by industry standards.

Speaking from my own experience binge-watching both seasons back to back last spring: the vocal chemistry between Kaede Hondo's explosive, sunbeam-energy Hakari and Miyu Tomita's exasperated-but-loving Karane feels lived-in in a way that only comes from performers who have genuinely spent time together. You can hear them listening to each other between lines. That kind of ensemble warmth does not happen by accident in post-recording sessions. It requires those group sessions in the booth, and it requires the production to prioritize them even when scheduling is painful.

The Guinness World Record: A 7,453-Character Love Speech

The Season 2 finale, which aired March 30, 2025, ended with a scene that had manga readers quietly dreading and eagerly anticipating in equal measure: Rentaro's "Declaration of Love," a continuous speech in which he describes exactly what he loves about each of his eleven current girlfriends, one by one, without stopping. On June 25, 2025, Guinness World Records certified it: 7,453 Japanese characters, the longest monologue in the history of Japanese animation.

Guinness interviewed Wataru Kato about the recording session itself, and what he described is one of the more remarkable behind-the-scenes accounts in recent anime history. He knew from reading all the manga before production began that this scene was coming. But because scripts are delivered episode by episode, he did not know when it would land until Episode 11 of Season 2, when the staff told him: it's coming next time.

"Given the massive amount of dialogue, I thought this scene would surely be recorded separately, but I couldn't believe it -- all the voice actresses playing the girlfriends sat in the back seats watching me read the entire thing."

After Kato finished reading the entire monologue in one session, the full company of voice actresses applauded and came over to him. He described the experience as one of the most emotionally worthwhile of his career. The speech had to accommodate pauses for water because Kato was concerned about maintaining consistent energy across descriptions of eleven different people without his voice flagging. He stopped when he felt he needed hydration, restarted from a few lines back, and kept going.

The scene was so long that even the speed-forwarded broadcast version ran long. It became a trending topic the night it aired, with fans on Twitter and Reddit pausing the episode repeatedly to catch every individual girlfriend callout in sequence. That organic viral reaction is a good part of why the production committee decided to pursue the Guinness certification in the first place.

Recording the Rentaro Family: Group Sessions and the Opening Theme Ensemble

One of the most distinctive features of the 100 Girlfriends production is how consistently it uses group recording sessions, and nowhere is this more visible than in the show's music. The Season 1 opening theme, "Dai Dai Dai Dai Daisuki na Kimi e" (To You Who I Really, Really, Really, Really, Really Love), was performed by Kaede Hondo, Miyu Tomita, Maria Naganawa, Asami Seto, and Ayaka Asai, the voice actresses behind the first five girlfriends, recorded as an ensemble.

Season 2 took this further. The opening theme "Arigato, Daisuki ni Natte Kurete" (Thanks for Being So Lovable) was performed by the full "Rentaro Family" unit: all eleven voice actresses of the girlfriends from Seasons 1 and 2 together. Getting every one of those eleven performers into the same recording session for a polished commercial single involves a level of schedule coordination that most anime productions simply cannot pull off. The fact that it happened smoothly twice over speaks to how seriously Bibury and the production committee take the ensemble identity of the show.

For Season 3, an insert song called "Hakobune: 100-nin Nottemo Daijobu" (roughly: "Ark: Even 100 People Aboard Is Fine") was featured in the teaser trailer, again performed by the expanded Rentaro Family. This means that before Season 3 even aired, the full new cast had already been together in a music recording session. The vocal preview heard in the trailers is not scratch audio. It is the real performances.

Why the Group Sessions Matter More Than Just Logistics

Standard anime production often records video game-style: each voice actor alone in the booth, matching lines to the footage, with no co-star to react to. The seiyuu wiki notes that in many productions, collaborating voice actors may never meet each other in person at all. Individual recording is cheaper and more schedule-flexible.

100 Girlfriends makes that approach nearly impossible. The show's comedy depends on timing between characters. Hakari being loud while Karane is exasperated while Shizuka cannot speak out loud but is visibly delighted: that interplay only works on screen if it was alive in the recording booth first. The fact that Kato described the voice actresses watching him live during the monologue recording, not listening through headphones in a separate session later, tells you something deliberate about how Hikaru Sato runs his productions.

The English Dub Cast

Crunchyroll produced an English dub for Season 1, announced on October 27, 2023, and premiering two days after the Japanese broadcast on October 29. The dub was directed by Helena Walstrom, produced by Samantha Herek, with scripts by Macy Anne Johnson. The Season 2 English dub followed on January 26, 2025.

A fun behind-the-scenes note from the dub: in Episode 6, Ian Sinclair stepped in as narrator because Jim Foronda had the flu. The fact that this was documented and noted on the dubbing wiki says something about how closely the Hyakkano fanbase pays attention to production details. These are not casual viewers. They are keeping receipts on every casting decision.

Season 3: New Voice Actors, New Girlfriends, and What to Expect July 2026

Season 3 was announced October 18, 2025, at a special fan event. The production team returned intact: director Hikaru Sato, series composer Takashi Aoshima, character designer Akane Yano, with music again from Shuhei Mutsuki, Shunsuke Takizawa, and eba at Lantis. The one addition is costume designer Riko Iwata. The premiere date is confirmed as July 5, 2026, on Tokyo MX.

Confirmed New Cast Members

At AnimeJapan 2026 on March 28, the production committee revealed two of the new Season 3 voice actresses:

• Kaori Ishihara as Chiyo Iin: Chiyo is Rentaro's cousin, a first-year middle school class president with a reserved, book-smart energy. Ishihara is widely known for roles including Hotaru Katsuragi in Cultural Exchange with a Game Centre Girl. Chiyo's character dynamic is notable because she is canonically related to Rentaro, which adds a complication that the show does not shy away from.
• Ayana Taketatsu as Nadi: Nadi is a Japanese language teacher who is distinctly American in aesthetic, with a cowboy hat and a stars-and-stripes scarf. Taketatsu is best known as Kirino Kosaka in Ore no Imouto ga Konnani Kawaii Wake ga Nai (OreImo), making this a somewhat loaded casting choice for longtime anime fans. Her energy fits Nadi's described personality: big, confident, outward-facing.

The Mystery Characters

As of the Season 3 main trailer released June 27, 2026, three additional new girlfriends have been previewed with their voices but not their cast members: Yamame Yasashiki, Momiji Momi, and Kishika Torotoro. The production team is deliberately holding back the announcements until the characters appear in the broadcast, which means fans will find out who voices them at the same time the characters debut. A sixth mysterious character is also teased, described only as someone who resembles Kusuri Yakuzen.

The Season 3 Opening Theme

The Season 3 opening theme is "Daisuki, Zutto Eien ni" (I Love You, Always and Forever), again performed by the Rentaro Family, this time expanded to include the new Season 3 cast. The June 27 main trailer gives the first full preview of the track, with the new voices of Yamame, Momiji, and Kishika audible but uncredited for now. This continues the production's tradition of using the group theme recording as a bonding exercise for the cast, and also as a way of giving fans the emotional payoff of hearing the whole family together before the season even starts.

The Idol Arc and What It Means for the Recording Sessions

Season 3 adapts what is known in the fandom as the Idol Arc, a segment of the manga in which several members of the Rentaro Family pursue an idol performance as a group. This is relevant to the recording discussion because idol arcs in anime typically require additional music recording: character songs, performance sequences, and backing tracks that need to be produced separately from the main episode dialogue. For a cast of this size, the music production workload for Season 3 likely dwarfs what either of the first two seasons required, even accounting for the full-ensemble openings.

Anime NYC 2026 on August 22 will feature Wataru Kato, Kaede Hondo, and Miyu Tomita at the first overseas panel for the series, marking the anime's first major English-language convention appearance. This is the production committee testing international appetite, and the turnout is likely to determine how visible the show becomes in Western markets going forward.

The Logistics Are Part of the Love

There is something fitting about the fact that the show about a guy who refuses to let scheduling problems prevent him from loving everyone equally is itself held together by a production team that refuses to let scheduling problems prevent the cast from actually working together. Every group recording session, every ensemble theme track, every decision to put fourteen voice actresses in the same room for the monologue finale rather than letting Kato record alone: these are choices. They cost more time and money than the alternatives. They are also why the show sounds the way it sounds.

Season 3 premieres on July 5, 2026. The family is getting bigger. The recording sessions are getting more complicated. And somewhere in a Tokyo studio right now, a sound director is looking at a calendar with fourteen names on it and doing exactly what Rentaro does every single episode: figuring out how to make it work for everyone at once.