Crown prince Cecil was so brilliant that everything in life was easy to the point of boring him, then one day, his fiancée Bertia suddenly said "Prince Cecil, I am a villainess!" Claiming that this world is the same as that of an "otome game" from her past life and that she is playing the role of the "villainess" in it, she aims to play her part well and have their engagement annulled. With that goal in mind, she sets about causing turmoil in Cecil's daily life.
 
Note: Chapter count contains 4 extra chapter.

Originally published on Syosetu prior to serialisation. 

Crown prince Cecil was so brilliant that everything in life was easy to the point of boring him, then one day, his fiancée Bertia suddenly said "Prince Cecil, I am a villainess!" Claiming that this world is the same as that of an "otome game" from her past life and that she is playing the role of the "villainess" in it, she aims to play her part well and have their engagement annulled. With that goal in mind, she sets about causing turmoil in Cecil's daily life.

A sequel of popular series, "An Observation Log of My Fiancée Who Calls Herself a Villainess." 
 
Crown Prince, Cecil, married Bertia who is a self-proclaimed "Villainess." While they were enjoying their lives as newlyweds, Bertia received a request from her friend, Princess Risona of the Umube Kingdom, to produce her wedding ceremony. On their way to Umube, Bertia is being really excited, and Cecil has to support her... 
 
A very popular, unique romance fantasy!
 
(Source: Alpha Manga)

Crown Prince Cecil has wed Bertia, the self-proclaimed villainess. The two are now enjoying their happily-ever-after in what can only be described as the ultimate devoted love journey. However, their peaceful days are fleeting when Bertia’s friend, Lysonna, reaches out with a special request-she wants Bertia to help plan her wedding. Still glowing from her own grand ceremony, Bertia eagerly travels to the Kingdom of Umyuve to reunite with Lysonna. Still, something feels a bit… off.
 
To her surprise, Bertia realizes that Lysonna is actually a character from the very novel she read in her past life-and worse, Lysonna was the villainess, notorious for tormenting her younger stepbrother and his fiancée out of jealousy. Determined to protect everyone’s happy ending, Bertia, once a top-tier villainess, makes a bold declaration: “I’ll step in as your stand-in villainess!”
 
And so, the curtain rises on Bertia’s new role as the world’s first Proxy Villainess!
 
(Source: Hanashi Media)

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.

__Height:__ 164 cm
__Hobbies:__ darts, driving, games, karaoke
__Skills & Abilities:__ acrobatics, karate, singing

[Profile (YU-RIN Pro)](https://yu-rin.com/pro-man/kobayashi-yusuke) | [Twitter](https://twitter.com/yusuke032510)

On January 1st, 2025, it was announced that he had gotten married to voice actress [Yumi Uchiyama](https://anilist.co/staff/106784/Yumi-Uchiyama).

__Non-Anime Roles:__
~! - Arslan in "Arslan Senki x Musou" (VG) (Japanese)
- Itaku in "Utawarerumono: Futari no Hakuoro" (VG) (Japanese)
- Opoona in "Warriors All-Stars" (VG) (Japanese)
- Ranmaru Mori in "Sengoku Night Blood" (VG) (Japanese)
- Sigurd in "Guardian's Violation" (VG) (Japanese)
- Takeru Akabane in "Code of Joker Edge" (arcade game) (Japanese)
- Terumi Niida; Kaoru Shishibara in "Prince of Stride" (VG) (Japanese)
- Tokugawa Ieyasu in "Hana Oboro ~Sengoku Den Ranki~" (VG) (Japanese)
- Tōshirō Shinano in "Touken Ranbu -ONLINE-" (VG) (Japanese) 
- Byleth in "Fire Emblem Three Houses-" (VG) (Japanese)
- Kalpas in "Honkai Impact 3rd" (VG) (Japanese)
- Xavier in "Love and Deepspace" (VG) (Japanese)
- Kiyoshi Kurotani (Persona 5: The Phantom X) (VG) (Japanese)
!~

__Agency:__ Aoni Production

[Profile](https://www.aoni.co.jp/search/inoue-marina.html) | [Blog](http://yaplog.jp/marinavi/) | [Twitter](https://twitter.com/Mari_navi) | [Anison](http://anison.info/data/person/17179.html) | [Wiki (en)](https://en.wikipedia.org/wiki/Marina_Inoue) | [Wiki (jp)](https://ja.wikipedia.org/wiki/%E4%BA%95%E4%B8%8A%E9%BA%BB%E9%87%8C%E5%A5%88)

A voice actress and singer. She is signed onto Sony Music Japan's Aniplex division as a music artist. Formerly under the agency Sigma Seven, she transferred to Aoni Pro in 2022.

**Non-Anime Roles:**
~!- Pallas - Arknights (VG)
- Elysia - Honkai Impact 3rd (VG)
- Yanqing - Honkai: Star Rail (VG)
- Helm - Goddess of Victory: Nikke (VG)
- Zhu Yuan  - Zenless Zone Zero (VG)
- Vera - Punishing: Gray Raven (VG)
- Cyrene - Honkai: Star Rail (VG)
- Lynae - Wuthering Waves (VG)
!~

Cecil Glo Alphasta