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Marie and Arthur, as seen in the new trailer.

The mechanical love story is coming next month (Image: Zero-G/ Liber).

Mechanical Marie anime to debut on 5 October, more cast revealed in new trailer

The romcom anime is based on Aki Akimoto’s manga.

The upcoming rom-com anime series Mechanical Marie just released a new trailer. The video revealed that the series will premiere on 5 October, 2025. Moreover, new cast members and theme song previews were also included in the trailer. If you’re a fan of romance with a healthy dose of situational comedy, then this show should be on your watchlist for Fall 2025.

Mechanical Marie anime new cast, staff, and other details

The five new voice actors joining the cast are:

  • Bridget voiced by Saima Nakano
  • Isabel voiced by Yo Taichi
  • Toby voiced by Shuntaro Hara
  • Uncle Carl voiced by Kappei Yamaguchi
  • Aunt Charlotte voiced by Rieko Takahashi

Previously announced main and additional cast of the anime includes:

  • Marie voiced by Nao Toyama
  • Arthur voiced by Haruki Ishiya
  • Marie-2 voiced by Ami Koshimizu
  • Noah voiced by Chiaki Kobayashi
  • Roy voiced by Yuichiro Umehara 
  • Maynard voiced by Daishi Kajita

The opening theme song ‘Honto to Uso’ (Truth and Lies) is being performed by Harutya, while the ending theme song ‘Cross Heart ~Itsuwari no Nai Kimochi’ (Feelings With No Lies) will be performed by Nao Toyama as her character Marie. Junji Nishimura directs the anime at studios Zero-G and Liber. 

Mariko Kunisawa handles series composition while Yoko Kikuchi designs the characters. Yasuharu Takanashi composes the music together with Johannes Nilsson. The original manga is created by Aki Akimoto. Crunchyroll will stream the anime globally when it releases. The platform describes the story as:

Marie, a former legendary martial artist, now conceals her identity as a human and starts working as a “robot” in the mansion of Arthur, heir to a conglomerate that despises humans. Her human identity must remain hidden—because one slip-up and she’s dead! Her naturally emotionless demeanor helps her maintain her “robot” disguise and flawlessly perform her duties, all while struggling to protect Arthur from assassins sent to take his life. She lives each day on the edge with her heart racing, because Arthur is head over heels for Marie, and her human identity is nearly exposed!