I Have Decided to Protect My Fiancé from the Heroine

Kaede Sakamoto, just your average Japanese high school girl. She was hit by 'Truck-san' and died. Surprise surprise, she has reincarnated into an 'Otome game', "Doki-Doki My Love Magical Academy"; which she coincidentally played due to a recommendation from [Friend A]. Now, she vows to be a good ruler, and to prote...