Overall score 8.2
Rank #1
An Observation Log of My Fiancée Who Calls Herself a Villainess
Jishou Akuyaku Reijou na Konyakusha no Kansatsu Kiroku.
自称悪役令嬢な婚約者の観察記録。
Other names 3
- Chinese
- 自称恶役大小姐的婚约者观察记录。
- Also known as
- Observation Records of My Fiancée: The Misadventures of a Self-Proclaimed Villainess
- Also known as
- บันทึกสังเกตการณ์คู่หมั้นผู้ประกาศตัวเป็นนางร้าย
Overall score 7.6/10
Spring 2026#17 (#17 overall)Overall score The overall score is not a simple average but a weighted blend: (w_P·P + w_T·T + v·R) / (w_P + w_T + v)This title: Site scores P = 7.58 (weight 69, 76%); Fan sentiment T = 7.66 (weight 21.3, 24%); Community: No ratings yet (each rating counts as one vote); P: site consensus 7.59 (41.9K votes), shrunk toward the season baseline 6.97 by vote count to 7.58.P is the consensus of site scores (calibrated to one scale), T the sentiment of public comments, R our community's mean. Each part is weighted in “virtual votes”: more votes and comments mean more weight.See the breakdown · Scoring rules in detailSentiment 6.8 · 66% positiveChinese audience 7.4English audience 7.6
- Female-Oriented#4 (#4 in Female-Oriented, Spring 2026)
- Isekai#5 (#5 in Isekai, Spring 2026)
- Romance#6 (#6 in Romance, Spring 2026)
- 2026#57 (#57 in the 2026 ranking)
- Comedy
- Fantasy
- Romance
- #Villainess
- #Royal Affairs
- #Ojou-sama
12 eps · FinishedONA
Ashi ProductionsLight novel adaptationPremiered Apr 3, 202624 min per episodeOverview
Spoiler-free synopsis
芭蒂雅转生到了一款乙女游戏的世界中，她自称是「恶役千金」，与完美到无可挑剔的王太子赛希尔订下了婚约。 但是—— 「我的使命是要拆散殿下与女主角的关系，然后狠狠吃瘪！」 为了让赛希尔获得幸福，她自身的毁灭是不可或缺的。 芭蒂雅认定，在赛希尔与「命运的少女」结为伴侣的路线中，自己必须作为恶之花盛放，然后凋零。于是，她想尽各种办法，试图做出恶行——！？ 看着天真烂漫的芭蒂雅奋斗的模样，原本终日百无聊赖的赛希尔，内心也渐渐被她打动。 赛希尔将她的胡来和奋斗记录下来，编成了这本未婚妻观察记录。
Chinese synopsis from Bangumi (opens in a new window)
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!
Genres & tags
- Comedy
- Fantasy
- Romance
- Slice of Life
- #HeterosexualRelevance 95%
- #VillainessRelevance 92%
- #Male ProtagonistRelevance 86%
- #Royal AffairsRelevance 85%
- #Female ProtagonistRelevance 79%
- #Ojou-samaRelevance 79%
- #IsekaiRelevance 77%
- #ShoujoRelevance 70%
The percentage after a tag is its relevance to this title. 3 more tags that may contain spoilers are hidden; you can reveal them under Viewing notes.
Details
- Format
- ONA · 12 episodes · 24 min per episode
- Status
- Finished
- Aired
- Apr 3, 2026 – Jun 19, 2026
- Studio
- Ashi Productions
- Source
- Light novel adaptation
- Season
- Spring 2026
- Categories
- IsekaiFantasyRomanceSlice of LifeComedyFemale-Oriented
- Official site
- jisho-akuyaku-anime.jp (opens in a new window)
Where to WatchOfficial platforms
Prices & detailsPrices & detailsPrices & detailsPrices & detailsPrices & detailsPrices & detailsPrices & detailsPrices & detailsPrices & detailsPrices & detailsPrices & detailsPrices & detailsPrices & detailsPrices & detailsPrices & detailsPrices & detailsPrices & detailsPrices & detailsPrices & detailsPrices & detailsPrices & detailsPrices & detailsPrices & detailsPrices & detailsPrices & detailsPrices & detailsPrices & detailsPrices & detailsPrices & detailsPrices & detailsPrices & detailsPrices & detailsPrices & detailsViewing regionYour saved choiceGuessed from your network location; change it anytimeNetwork location unavailable. Preselected from browser language; confirm your viewing region.Network location unavailable. Default shown; choose your viewing region.
Mainland China: no confirmed streaming page yet.
Taiwan: no confirmed streaming page yet.
Hong Kong: no confirmed streaming page yet.
Malaysia: no confirmed streaming page yet.
South Korea: no confirmed streaming page yet.
Philippines: no confirmed streaming page yet.
- CrunchyrollSubscription
- Amazon Prime VideoDigital purchase
- Apple TVDigital purchase
- Fandango at HomeDigital purchase
- Amazon Prime VideoSubscription
- HuluSubscription
- Amazon Prime VideoRent
- ABEMAAccess type unknown
- dアニメストアAccess type unknown
- NiconicoAccess type unknown
- U-NEXTAccess type unknown
Other regions & licensing details
- Canada
- United States
- Crunchyroll (title page, opens in a new window)
- Apple TVPlatform homepage (platform homepage, opens in a new window)
- Amazon Prime VideoPlatform homepage (platform homepage, opens in a new window)
- Fandango at HomePlatform homepage (platform homepage, opens in a new window)
- Japan
- Amazon Prime VideoPlatform homepage (platform homepage, opens in a new window)
- ABEMA (title page, opens in a new window)
- Amazon Prime Video (title page, opens in a new window)
- dアニメストア (title page, opens in a new window)
- HuluPlatform homepage (platform homepage, opens in a new window)
- Niconico (title page, opens in a new window)
- U-NEXT (title page, opens in a new window)
- Singapore
- United Kingdom
- Australia
- Germany
- France
- Spain
- Italy
- Mexico
- Brazil
- India
- Indonesia
- Thailand
- New Zealand
- Ireland
- Netherlands
- Belgium
- Austria
- Switzerland
- Sweden
- Norway
- Denmark
- Finland
- Portugal
- Poland
- Other regions
- Region not verifiedThese official pages are listed by bangumi-data or AniList, or reported by ANN news, but the source doesn't say in which regions they are available. Whether you can watch there, and at what price, is up to the platform's page.Sources: AniList
Official, licensed options only; the platform's page is what counts. Every row cites its source · checked Sep 26, 2026
What people sayPublic comments from other sites
AI sentiment analysisAn AI model (qwen3:8b) rates each public comment as very positive / positive / mixed / negative / very negative (scored 9.5 / 8 / 6 / 4 / 2), averages them weighted by confidence, site, length, “helpful” votes and date, then shrinks the result toward a neutral 6 (so a few comments can't inflate it).Calibrated to the site-score scale it is 7.66, and it counts toward the overall score by the number of comments (at most 35%).Only the latest ~40 comments per site are read (plus ~50 posts from each forum's episode threads, which weigh less): a sample, not everything. Excerpts are at most 140 characters and belong to their authors; comments that may contain spoilers are not shown. Comments from Chinese sites appear in an AI translation, with the original one click away. Sentiment labels can be wrong. Updated Oct 7, 2026, 06:36.See the score breakdownSentiment score6.8/10
Positive66%
53 comments analyzed: Bangumi 38 · Kitsu 11 · AniList 4
English audience score 7.6 · 40,886 samples
Very positiveAuthor's score 9.58 found this helpful
An Observation Log of what makes this Villainess Anime so Great I absolutely adored this anime, to the extent that this is by far my…
Positive6 found this helpful
Bertia is every bit as cute as in the novel and manga.
Positive3 found this helpful
Doesn't completely break the Villainess tropes but has enough uniqueness to make it enjoyable to watch, and actually a decent ending
Mood & content
Source: Derived from community tagsConfidence: medium (50%)Updated Sep 24, 2026
0 = barely any, 10 = very pronounced. Values measure how much, not how good, and different viewers feel the same show differently. “No data yet” means the item hasn't been assessed yet, not that it's absent.
Mood
- Light
- Exciting
- Heavy
Funny and relaxing: high
Light
- Relaxing6.0 / 10, levelHigh. Easy to watch, low effort
- HealingNo data yet. Gentle and comforting
- Funny6.5 / 10, levelHigh. Density of laughs
- HeartwarmingNo data yet. Warmth from relationships
Exciting
- HypeNo data yet. Adrenaline and excitement
- TenseNo data yet. Suspense and tension
Heavy
- OppressiveNo data yet. Heavy, stifling atmosphere
- DarkNo data yet. Darkness of setting and themes
- SadNo data yet. Share of sad moments
- BleakNo data yet. Likelihood of a lingering low mood
Emotional intensityNo data yet. How strongly it moves you, either way
Emotional intensity measures how strong the ups and downs are, happy or sad.
Content
Higher = more of itThemes
Action
No data yet. Share of fights and action
Romance6.5
High (6.5 / 10). Weight of romance plotlines
Slice of life7.0
High (7.0 / 10). Share of everyday-life episodes
Harem
No data yet. Harem dynamics around the lead
Sensitive content· may be upsetting; judge by your own comfort level
Fan service
No data yet. Suggestive shots and fan service
Violence
No data yet. Intensity of violence
Gore
No data yet. Blood and graphic injury
Character death
No data yet. Likelihood of major character deaths
Horror
No data yet. Scares and horror
Psychological stress
No data yet. Mental torment and anxiety
Betrayal
No data yet. Betrayal plotlines
Heartbreak
No data yet. Deliberately heart-wrenching arcs
Style
ComplexityNo data yet
(0 = Easy to follow, 10 = Mind-bending). Plot complexity and densityPacing3.5
(0 = Slow burn, 10 = Fast-paced). 0 = slow burn, 10 = fast-pacedWorld-building6.0
(0 = Simple, 10 = Vast and deep). Depth of the setting
Viewing notes
Spoiler-free by defaultNo spoiler-free viewing notes yet.
Ratings
Updated Oct 7, 2026, 06:36About scores
Overall score The overall score is not a simple average but a weighted blend:
(w_P·P + w_T·T + v·R) / (w_P + w_T + v)This title: Site scores P = 7.58 (weight 69, 76%); Fan sentiment T = 7.66 (weight 21.3, 24%); Community: No ratings yet (each rating counts as one vote); P: site consensus 7.59 (41.9K votes), shrunk toward the season baseline 6.97 by vote count to 7.58.P is the consensus of site scores (calibrated to one scale), T the sentiment of public comments, R our community's mean. Each part is weighted in “virtual votes”: more votes and comments mean more weight.See the breakdown · Scoring rules in detailOverall score 7.6/10
Score breakdownThe three parts are weighted in “virtual votes”: the more site votes and analyzed comments, the more weight that part gets. Fan sentiment is capped at 35%, and each AniRanking rating counts as one vote. Full rules
- Site scores7.5876%Consensus of 41.9K site votes (calibrated to one scale and shrunk toward the global baseline by vote count)
- Fan sentiment7.6624%53 comments, average 6.80 (the sentiment score shown, 6.8, is also shrunk toward neutral), calibrated against comparable titles to 7.66
- CommunityNot counted0%No ratings yet (each rating counts as one vote)
Site scoresThe site consensus is 7.59 (41,928 votes, weighted by site reliability × log of votes); shrunk toward the season baseline 6.97 by vote count, it becomes 7.58. Sites score differently (Bangumi runs low, bilibili high), so each is first calibrated to one scale using titles rated on both it and AniList, then combined; sites with fewer than 100 votes are ignored.
Raw → calibrated to one scale| Site | Raw score | Votes | Calibrated |
|---|---|---|---|
| AniList (external link, opens in a new window)Reference site | 77/100 | 8,481 votes | 7.7 |
| MyAnimeList (external link, opens in a new window)Calibrated to the AniList scale | 7.7/10 | 32.4K votes | 7.6 |
| Bangumi (external link, opens in a new window)Calibrated to the AniList scale | 6.5/10 | 1,056 votes | 7.5 |
| bilibiliNo data | — | — | Not counted |
Related
Female-Oriented ranking · Spring 2026
Full Female-Oriented ranking →
Overall score 8.1
Rank #2
Ascendance of a Bookworm: Adopted Daughter of an Archduke
Honzuki no Gekokujou: Ryoushu no Youjo
Genres: DramaFantasyOverall score 7.6
Rank #3
An Observation Log of My Fiancée Who Calls Herself a Villainess
Jishou Akuyaku Reijou na Konyakusha no Kansatsu Kiroku.
This titleGenres: ComedyFantasyOverall score 7.6
Rank #4
Overall score 7.6
Rank #5
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