He took revenge on me

Probably the typical case of ML taking out his anger/ taking revenge from her father or family or something by hurting the FL, in this csee he straight up murdered her. I really hope he is not the ML 

 

Characters Guide:
Romance Guide* Background/Field of Study: Western Style/Romantic Fantasy

* Work Keywords: Regression/Time Slip

* Male Protagonist
- Aiden Whiz Mistro: The fiancée with a sword in her chest before the princess returned.
- Arubin Thietar Paul Resenod: The 3rd Prince of the Sick Boy Empire. He actively woos the princess.
- Perthiel David Michel: The princess's childhood friend and escort knight.
- Roian de Borgia: The princess's cousin. Commonly known as the Mad Wizard.

* Female Protagonist
- Lidiesch: Struggling to survive after returning to a princess like a girl with a lot of loneliness

* Look at this time: When you want to see a romance fantasy novel without a villain

* Sympathetic text: “Yes. You must be patient. Promise me that you will never take the easy road of giving up hope. Whatever the situation, please don't forget that the princess's happiness is mine... … .” 

so the ml is the fiance who killed her ? 

 

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What did she do to him for he to take revenge for her cuz if nothing the title is very misleading 

Huh? Sick Boy Empire..?

Anyways... Camping here~