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Hotel Inhumans Season 2 Adds Mitsuki Saiga as Sekiya

The Hotel Inhumans anime's official website named Mitsuki Saiga as Sekiya, a woman often seen on the train reading books about murder or poison, for the second season.

Reporting from 1 source: Anime News Network.

Why it matters

The cast addition confirms the second season is still filling out roles ahead of broadcast, and Sekiya's described habit of reading about murder and poison fits a show whose guest list is professional assassins.

Hotel Inhumans Season 2 Adds Mitsuki Saiga as Sekiya

Key Facts

  • Mitsuki Saiga plays Sekiya in Hotel Inhumans season 2.
  • Tetsuro Amino returns to direct the second season at Bridge.
  • GAN performs the second season opening theme "Rasen" and Phantom Siita performs the ending theme "Sweet Pea."
  • The first season aired on TV Tokyo from July to September 2025 and was streamed by Crunchyroll.
  • Ao Tajima's Hotel Inhumans manga ended with its 12th compiled volume, which shipped in September 2025.

The first season debuted on TV Tokyo in July 2025 and ended that September, with Crunchyroll streaming it as it aired. Tetsuro Amino directs at Bridge, with Shoji Yonemura on series scripts and Shingo Fujisaki designing characters.

The character description does the work here: Sekiya is a woman frequently seen on the train reading books about murder or poison. That fits the premise Seven Seas Entertainment outlines for Ao Tajima's manga, a luxury hotel whose guests are professional assassins and whose concierges never say no to any request.

Production stays in the same hands. Tetsuro Amino directs at Bridge, with Bridge's Isle studio also credited, Shoji Yonemura writes the series scripts, and Shingo Fujisaki designs the characters. Hina Yomiya voices Shiba Kirihara and Shoya Chiba plays Subaru Yoda. GAN performs the opening theme "Rasen" and Phantom Siita performs the ending theme "Sweet Pea."

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