100 Girlfriends Season 3 Adds Rie Kugimiya as Yaku Yakuzen

The 100 Girlfriends Who Really, Really, Really, Really, REALLY Love You Season 3 has added a new heroine at a particularly memorable point in its run. On August 23, 2026, the anime's official website announced that Rie Kugimiya will voice Yaku Yakuzen, while a separate update added Yaku to the latest key visual. For international viewers, the series is already streaming through Crunchyroll, but the announcement is still worth tracking because it changes the on-screen shape of Rentaro's growing family and introduces one of the season's most unusual character premises.

What Was Announced

The official cast announcement identifies Yaku Yakuzen as a new heroine in Season 3 and names Rie Kugimiya as her voice actor. The site describes Yaku as one of Rentaro's girlfriends and Kusuri Yakuzen's grandmother. Although she is 89 years old, she lives with the appearance of an eight-year-old because of the effects of a failed immortality drug. The official profile also presents her as someone with considerable life experience, a reserved personality, and a pronounced difficulty with modern foreign words.

Kugimiya's appointment is accompanied by a short official comment in which she describes Yaku as outwardly childlike but emotionally mature and reassuring. The anime's official website also published a new key visual on the same date. That image adds Yaku to the existing lineup, bringing the number of girlfriends shown in the visual to 17.

These are two related but distinct updates: the cast announcement confirms who performs Yaku, while the key-visual announcement confirms her inclusion in the current ensemble artwork. Neither page announces a new season or a change to the show's broadcast plan.

Why It Matters

Yaku is not simply another new face in a large cast. Her relationship to Kusuri gives the season a direct family connection inside Rentaro's already expanding group, and her age-versus-appearance setup creates a character dynamic unlike the younger heroines introduced earlier in Season 3. That contrast may become especially important as the story moves between the series' broad romantic-comedy premise and the more specific histories of the people around Rentaro.

The casting also gives the update immediate interest for anime fans who follow Japanese voice performances. Kugimiya is a long-established performer whose credits include prominent anime roles, but the official announcement does not claim that her casting is intended to signal a particular direction for the character. It is safer to treat the choice as a confirmed cast detail and wait for the episodes themselves to show how Yaku fits into the comedy, family relationships, and larger ensemble.

The updated visual matters in a practical way as well. With 17 girlfriends represented in one image, it provides a current snapshot of how far the anime adaptation has progressed, rather than merely repeating the Season 3 launch artwork. It may also serve as the reference image for future promotional announcements, although the production committee has not stated that in the announcement.

Context for International Fans

Season 3 began its Japanese television run on July 5, 2026. The official on-air page lists a Sunday 10:30 p.m. slot on Tokyo MX and a Sunday 11:00 p.m. slot on BS11, with other Japanese stations following their own schedules. Japan's listed streaming rollout started at 11:00 p.m. JST on Sundays for the early services, followed by additional platforms on later dates. Those times are Japanese local time, so viewers elsewhere should use their platform's local schedule rather than converting the broadcast slot blindly.

The anime's official Global page lists Crunchyroll under “Worldwide” and separately notes that streaming schedules may differ by service. Crunchyroll's official series page currently provides the series with Japanese and English audio options alongside subtitles in multiple languages, but the exact availability of episodes, dubs, and subtitles can vary by territory and account. The safest route is to search for Season 3 inside the viewer's local Crunchyroll catalog. The official Global page also lists additional services for parts of Asia and says more detailed regional information should be checked with each platform.

For readers outside Japan, the key unresolved point is not whether Yaku has been cast—that is confirmed—but when her episode appears in a particular local release schedule. The August 23 announcement does not provide a separate international launch date for Yaku's debut, and it does not identify a special dub timetable tied to this character reveal.

What Happens Next

Fans should watch the anime's official news feed and character pages for the next episode-specific update, especially any announcement that names Yaku's debut episode or adds new story and promotional material. International viewers should also check the Crunchyroll episode listing each week, because the official site warns that schedules can differ across services. Any future announcement about a delayed episode, a broadcast change, or additional regional distribution should be treated as a separate update rather than inferred from the new visual.

For now, the verified development is compact but meaningful: Season 3 has formally added Yaku Yakuzen to its heroine lineup, Rie Kugimiya is her confirmed voice actor, and the official ensemble visual now shows 17 girlfriends. Everything beyond those points remains something to confirm from the next primary-source update.

Information was checked on August 26, 2026, at 12:45 a.m. JST.

Sources

• Official cast announcement: confirms Rie Kugimiya as Yaku Yakuzen and provides the character profile.
• Official key-visual update: adds Yaku to the Season 3 ensemble image and states that 17 girlfriends are shown.
• Official Japanese broadcast and streaming schedule: lists the Japan TV times and platform rollout.
• Official global streaming page: lists Crunchyroll worldwide and regional services, with a schedule caveat.
• Crunchyroll official series page: provides the international viewing listing, audio, and subtitle information.

Editorial note: This report is based on the primary sources linked above. Availability, schedules, and announcements can change; verify the latest details with the official source.