
Jishou Akuyaku Reijou na Konyakusha no Kansatsu Kiroku.
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.

My Next Life as a Villainess: All Routes Lead to Doom!

I'm the Villainess, So I'm Taming the Final Boss

Accomplishments of the Duke's Daughter

Endo and Kobayashi Live! The Latest on Tsundere Villainess Lieselotte

Konyakusha ga Akuyaku de Komattemasu

Yowaki MAX Reijou Nano ni, Ratsuwan Konyakusha-sama no Kake ni Notte Shimatta
An Observation Log of My Fiancée Who Calls Herself a Villainess has 37 chapters across 6 volumes.
As of now, An Observation Log of My Fiancée Who Calls Herself a Villainess has finished.
An Observation Log of My Fiancée Who Calls Herself a Villainess was published from May 7, 2018 to March 17, 2022.
An Observation Log of My Fiancée Who Calls Herself a Villainess is a manga, originally from Japan.