Koukando Zero kara Hajimaru Saishou Kakka to no Kekkon Seikatsu

Synopsis

"Will you kiss my feet as proof that this isn't a lie?" Adela, the second princess of the small eastern kingdom of Renatania, has been ordered to marry Prime Minister Tristan Olio. He is a genius who rose to the position of prime minister at a young age, and a perfect man with excellent swordsmanship skills. However, to Adela, he is also an unpleasant man who only scolds her whenever they meet. ...This marriage is surely a political marriage for her to advance in her career. She thought it wouldn't be a good married life, but on their wedding night, Tristan uttered shocking words!? --I can't believe it. He hates me, so why is he looking at me with such passionate eyes...? [The cool prime minister] x [The ordinary princess who can't be honest] A doting marriage love story that starts from zero affection!? (Source: Otomitsu, translated)