Full Voice Cast Revealed for Highly Anticipated 'Eren the Southpaw' Anime Ahead of Early Screenings

The television adaptation of Kappi's acclaimed manga, Hidarikiki no Eren (Eren the Southpaw), is preparing for its April 2026 premiere. The production recently unveiled a new key visual and announced five pivotal additions to the voice cast, signaling the project's expanding scope.

These new cast members will portray characters surrounding the core duo of Koichi Asakura and Eren Yamagishi. The newly announced voice actors include: Yui Ishikawa as Sayuri Katō, Akira Sekine voicing Akari Kishi, Kazuyuki Okitsu embodying Yūsuke Kamiya, Yurina Amami portraying Yurina Mitsuhashi, and Kōji Yusa joining as Hajime Yanagi. These additions promise to deepen the narrative tapestry of intense artistic competition and personal drama.

Adding to the anticipation, the production team has scheduled an exclusive, one-week advance theatrical screening across select Japanese venues. This privileged preview will begin on March 27, 2026, offering dedicated fans an early look before the broadcast commences.

Production Team and Core Cast

This ambitious project is being helmed by a powerhouse creative unit. Toshimasa Suzuki directs the series at the joint studios of Signal.MD and Production I.G. Taku Kishimoto is managing the series composition, while Yuka Fukuchi and Akane Tamai oversee character design and chief animation direction, building upon Takayuki Goto’s initial concept designs.

Leading the emotional core of the story, Shōya Chiba voices Koichi Asakura, and Yumi Uchiyama brings the prodigious left-handed artist Eren Yamagishi to life. Promotional materials distributed by GAGA hint at the series’ central tension: the collision between Koichi’s path as an advertising designer and Eren’s explosive emergence as an artistic genius through striking graffiti. This journey forces both characters to confront the raw cost of ambition and true talent.

The anime draws from Kappi’s original web manga and the visually enhanced Shonen Jump+ remake, which was illustrated by nifuni and concluded in 2022 across 24 published volumes by Shueisha. The story has already demonstrated its multimedia appeal, having inspired a live-action feature adaptation in 2019.

The confirmed ensemble cast underscores that the narrative will explore the wider ecosystem of creatives, models, and rivals influencing Koichi's career trajectory and Eren's ascent in the contemporary art sphere. The strategic early cinema release strongly suggests the creative team is eager to generate significant early buzz, positioning Hidarikiki no Eren as a frontrunner in the Spring 2026 season for sophisticated, drama-infused storytelling focused on the high stakes of artistic passion and complex interpersonal relationships.