An Observation Log of My Fiancée Who Calls Herself a Villainess banner artwork

Format: ONA
Episodes: 12
Episode length: 24 min
Status: Finished
Aired from: Apr 3, 2026
Until: Jun 19, 2026
Season: Spring 2026
Source: Light novel
Average score: 77%
Mean score: 77%
Popularity: 32,045
Favorites: 870
Studio: Ashi Productions
Producers: KLOCKWORX, AlphaPolis
Genres: Fantasy, Comedy, Romance, Slice of Life
Hashtag: #自称悪役令嬢
Romaji: Jishou Akuyaku Reijou na Konyakusha no Kansatsu Kiroku.
English: An Observation Log of My Fiancée Who Calls Herself a Villainess
Native: 自称悪役令嬢な婚約者の観察記録。
Synonyms: Observation Records of My Fiancée: The Misadventures of a Self-Proclaimed Villainess บันทึกสังเกตการณ์คู่หมั้นผู้ประกาศตัวเป็นนางร้าย

External & streaming links

An Observation Log of My Fiancée Who Calls Herself a Villainess

★ 7.7 32,045 members

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!

(Source: Crunchyroll)

Note: Jishou Akuyaku Reijou na Konyakusha no Kansatsu Kiroku. was streamed 3 days in advance of the TV broadcast on Prime Video, and Crunchyroll beginning April 3, 2026. Regular broadcasting began on April 6, 2026.