Tensei Oujo Wa Ai Yori Ryouchi Ga Hoshii No De Seiryaku Kekkon Wo Kibou Shimasu! summary:

Princess Fairis, reincarnated into the world of strategy simulation games, uses her knowledge of the games she played in her previous life and is called the Warrior Princess. However, as soon as the war ends, she is ordered by the king to marry. In addition, she competes with her sister in arranged marriages and, depending on her partner, cannot get involved in national politics. ...... I want to build my country, not get married! As she struggles to arrange a political marriage that will give her more territory, Orpheed, a wizard who is also her trusted subordinate and a potential bride, unexpectedly confesses his love for her...?a love comedy between a reincarnated princess with zero love skills and the strongest wizard with an intense love.