An Observation Log of My Fiancée Who Calls Herself a Villainess: Story, Cast and Series Facts

Story and premise

Bertia is reincarnated into her favorite otome game—not as the heroine, but as the villainess engaged to the perfect Crown Prince Cecil! Fully aware that her role is to sabotage his future romance, she's determined to bloom as a wicked flower and wither away according to the story. But no matter how hard she tries to scheme, her "evil" plans only make her more endearing!

Series details

• Title: An Observation Log of My Fiancée Who Calls Herself a Villainess
• Format: Animation
• Language: Japanese
• Genres: Anime
• Premiere date: 2026-04-03
• Final broadcast date listed: 2026-06-19
• Status in TVmaze: Ended
• Network listed by TVmaze: Tokyo MX
• Network country: Japan
• Typical episode runtime: 30 minutes
• TVMaze ID: 91023
• IMDb ID: tt40546935
• TVDB ID: 463583

Cast and credited roles

• Yusuke Kobayashi — Cecil Glo Alphasta
• Iori Saeki — Silica Lunea
• Miyu Tomita — Bertia Ibil Noches
• Yume Miyamoto — Heronia Inderon
• Hidenori Takahashi — Vald Norgins
• Atsushi Tamaru — Zeno
• Ayumu Murase — Shawn Turquoin Alphasta
• Shun Horie — Nelt Krum
• Seiichirō Yamashita — Courtgain Deres Mardan
• Akari Kitō — Kuro
• Ayaka Ohashi — Joanna Curtswarren
• M・A・O — Cynthia Linnerith

Seasons in the TVmaze catalogue

• Season 1: premiered 2026-04-03; final listed air date 2026-06-19; episode order: 12.

Source and licence

Adapted from An Observation Log of My Fiancée Who Calls Herself a Villainess on TVmaze. The synopsis is reproduced as plain text; catalogue facts, cast and season records are selected and reformatted. This adapted text is available under CC BY-SA 4.0, following the TVmaze API licence. Network and web-channel credits identify the service listed in this source; they do not establish current streaming availability.