Seitokai ni mo Ana ga Aru! casts Yoko Hikasa as Hisako's mother and debuts new opening

Seitokai ni mo Ana ga Aru! expands its cast. The series announced that Yoko Hikasa will voice Makoto Kotobuki, the mother of Hisako, the student council president. The news comes alongside a new opening video that accompanies the anime's current broadcast.

The announcement was made around episode 7. Makoto is not just another student: she is part of Hisako's family, and her arrival can show the protagonist from a different angle than her classmates. So far, the official information focuses on her introduction and Hikasa's comment; no other new characters or a general change in the story have been detailed.

A mother with little-sister energy

Hikasa described Makoto as someone with a youthful energy and an enthusiasm that can make her seem like a friend or a younger sister to her own daughter. She also defined her as a woman with unpredictable ideas, with a presence capable of stirring things up even more when she appears.

Her involvement aims to introduce a different dynamic to the cast: an adult whose way of thinking does not match the conventional image one would expect of a mother.

Hikasa joins an ensemble cast that includes Shogo Sakata as Ume Mizunoe, Haruka Shiraishi as Hisako Kotobuki, Miyu Tomita as Komaro Michinoku, Hiyori Kono as Tan Otori, Shizuka Ishigami as Arisu Terui, and Yumi Uchiyama as Satomi Hiratsuka.

New opening sequence

Along with the cast news, the official site released a new opening video. The sequence uses "Kaze no Naka wa Hashiru Shika Nai!", performed by Sangatsu no Phantasia. The song keeps the energetic tone associated with life at Fujinari Academy and accompanies the scenes of the student group.

The theme has lyrics by Mia and Noko, composition by Noko, and arrangement by Kousuke Horie. The material was published on Aniplex's official YouTube channel.

A very particular student council

The anime adapts the manga by Muchimaro, published in Weekly Shonen Magazine. The story follows Ume Mizunoe, a student with excellent performance in literature but significant difficulties in science, who joins the student council to improve his grades and avoid repeating the year. There he meets a group of classmates with very different personalities, whose daily life combines humor, entanglements, and moments of school life.

The production is handled by Passione, with Naoyuki Tatsuwaki as director, Ryo Imamura on character design, and Masahiro Yokotani on series composition and script. The anime began airing in Japan on October 3, 2026.

Makoto's backstory and how her presence will affect the council's relationships will become clearer as the series progresses. What do you think of Yoko Hikasa's addition? Tell us in the comments.