The highly anticipated second part of the fourth season of the acclaimed anime series, That Time I Got Reincarnated as a Slime (Tensei Shitara Slime Datta Ken), has unveiled a suite of new promotional materials, including a dynamic video, a striking new visual, and the confirmed artists behind its upcoming theme songs. This revelation, made on Friday by the production staff, signals a significant step forward in the ongoing narrative of Rimuru Tempest and his burgeoning Jura Tempest Federation.
Unveiling New Content and Musical Collaborations
The newly released promotional video offers fans a tantalizing glimpse into the action and character dynamics that await in the latter half of the fourth season. While specific plot points remain under wraps, the visual presentation and musical score suggest an escalation of stakes and an expansion of the world viewers have come to know and love. Accompanying the video is a captivating new key visual, which often serves as a symbolic representation of the season’s thematic core and introduces key characters or pivotal moments.
Adding to the auditory experience, the production team announced that the renowned artist Daoko will be performing the new opening theme song, titled "TACTIC." Daoko, known for her unique vocal style and impactful contributions to various anime soundtracks, is expected to bring a fresh and energetic dimension to the series’ opening sequences. Complementing this, Azusa Tadokoro has been confirmed to perform the new ending theme song, "Hymnal." Tadokoro’s established talent in delivering emotionally resonant performances promises to provide a fitting close to each episode, reinforcing the narrative’s emotional arc.
The simultaneous release of these assets suggests a carefully orchestrated campaign to build momentum and sustain audience engagement leading up to the broadcast of the second part of Season 4. This strategic approach is common in the anime industry, aiming to maximize viewer anticipation and media coverage.
Blu-ray Release for Second Film Announced
In related news, the production staff also shared an important update regarding the physical media release of the second anime film, Gekijō-ban Tensei Shitara Slime Datta Ken: Sōkai no Namida-hen (That Time I Got Reincarnated as a Slime the Movie: Tears of the Azure Sea). The Blu-ray Disc for this cinematic installment is slated to ship in Japan on September 25. This release provides fans with an opportunity to own a high-quality version of the film, which has been a significant event in the franchise’s timeline, expanding the lore beyond the main television series. The film’s success and subsequent home video release are indicative of the franchise’s broad appeal and the demand for its content in various formats.
Broadcast Details and Series Longevity
The fourth season of That Time I Got Reincarnated as a Slime initially premiered on April 3rd, airing on NTV as part of its now consolidated one-hour "Friday Anime Night" programming block, commencing at 11:00 p.m. JST. The series also secured broadcast slots on BS11 on April 4th at 10:00 p.m. JST and became available on other streaming services concurrently at 11:00 p.m. JST. Crunchyroll has been instrumental in providing global access to the anime, streaming it as it airs in Japan, thereby reaching a vast international audience.
A notable aspect of the fourth season’s production is its ambitious broadcast schedule. The season is designed to span a total of five cours (quarters of a year), with the first two cours airing continuously. This extended run underscores the depth of the source material being adapted and the commitment of the production team to delivering a comprehensive visual narrative. The strategic decision to air in continuous blocks is often employed to maintain viewer immersion and prevent narrative fragmentation, a testament to the confidence in the story’s pacing and appeal.
Production Team and Voice Cast Continuity
The animation for the fourth season is once again being handled by the highly capable studio 8-Bit, a company that has been integral to the visual identity and quality of the Slime franchise since its inception. Their consistent involvement ensures a cohesive aesthetic and high production values that fans have come to expect. Leading the voice cast, Miho Okasaki reprises her role as the protagonist, Rimuru Tempest, continuing to embody the character’s complex development from a slime into a powerful demon lord.
The initial broadcast of the fourth season featured the opening theme song "Esoragoto" (Pipe Dream) performed by Eir Aoi, and the ending theme song "Katsubō" (Craving) performed by CiON. The introduction of new theme songs for the second part indicates a narrative progression and a desire to refresh the series’ sonic landscape, potentially reflecting shifts in the story’s tone or thematic focus.
The Genesis and Evolution of a Phenomenon
The That Time I Got Reincarnated as a Slime phenomenon has its roots in Fuse’s web novel serialization on the "Shōsetsuka ni Narō" (Let’s Become Novelists) platform, which ran from 2013 to 2016. This digital origin story garnered an astounding readership, exceeding 400 million page views, a clear indicator of its immense popularity even before its official publication. Micro Magazine then took on the task of publishing the series in print, featuring illustrations by Mitz Va, beginning in 2014. The main novel series concluded its run with its 23rd and final volume on November 29th.
Alongside the conclusion of the main narrative, a spinoff side story volume titled Tensei Shitara Slime Datta Ken: Toaru Kyōka no Sugoshi-kata (That Time I Got Reincarnated as a Slime: How to Spend a Certain Vacation) was released. Further expanding the universe, the novels are set to receive a side-story series, with the first installment scheduled for release in 2026, demonstrating the enduring appeal and narrative potential of the franchise. Yen Press has been instrumental in bringing the novel series to English-speaking audiences, further solidifying its global reach.
A Rich Television and Film History
The anime adaptation has a significant history, with the first television anime series, based on Taiki Kawakami’s manga adaptation of the light novels, premiering in October 2018. Crunchyroll and FUNimation Entertainment facilitated its international distribution and offered an English dub, respectively, introducing the world to Rimuru’s adventures.
The second television anime season commenced its run in January 2021 with its first cours. This was followed by the anime adaptation of Shiba’s spinoff manga, The Slime Diaries: That Time I Got Reincarnated as a Slime (Tensura Nikki Tensei Shitara Slime Datta Ken), which premiered in April 2021. The second cours of the main season’s second part began in July 2021, resulting in an impressive nine consecutive months of Slime anime content in 2021 alone, a testament to the franchise’s production capacity and fan demand.
More recently, the three-episode original anime series, That Time I Got Reincarnated as a Slime: Coleus’ Dream, debuted in Japan in November 2023, with all episodes released simultaneously. Crunchyroll provided international streaming access, including both subtitled and English dubbed versions, further diversifying the franchise’s content offerings.
The third season of the anime premiered in April 2024, airing for two continuous cours, a half-year run that concluded the adaptation of a significant portion of the source material. This consistent output highlights the franchise’s robust production pipeline and its ability to cater to a dedicated fanbase.
Cinematic Adventures and International Reach
Beyond the television series, the Slime franchise has also found success in film. The second anime film, Gekijō-ban Tensei Shitara Slime Datta Ken: Sōkai no Namida-hen (That Time I Got Reincarnated as a Slime the Movie: Tears of the Azure Sea), opened in Japan on February 27th. Crunchyroll facilitated its theatrical release in the U.S., Canada, the U.K., and Ireland on May 1st, offering screenings in both Japanese with English subtitles and with an English dub. This international theatrical rollout demonstrates the global significance of the franchise and the strategic efforts to engage audiences worldwide.
Prior to this, the film That Time I Got Reincarnated as a Slime: Scarlet Bond premiered in Japan in November 2022. Crunchyroll and Sony Pictures re-screened this film with an exclusive sneak peek of the second movie, further building anticipation for its release. These cinematic ventures not only provide standalone narratives but also serve to expand the Slime universe and engage fans on a grander scale.
The continuous stream of content, from ongoing television seasons and original anime series to feature films and the consistent release of the source material, solidifies That Time I Got Reincarnated as a Slime‘s position as a powerhouse in the anime and manga industry. The release of new promotional materials for the upcoming part of Season 4 indicates that the journey of Rimuru Tempest is far from over, promising more epic battles, political intrigue, and world-building for fans around the globe. The sustained popularity and expansive universe suggest a bright future for the franchise, with potential for further adaptations and narrative explorations.
