Watashi wa Futatsume no Jinsei wo Aruku!

Fie, first princess of Daeman, finds herself isolated and stranded in the foreign Kingdom of Orstoll all by her lonesome - effectively having been wed off as a dowry gift in accessory to her sister, Princess Fielle's marriage. Trapped and isolated in a small back garden that once used to be a storehouse, Fie lives her days without purpose, and eventually without food - after the only member of her entourage, the chef, resigns. Just as Fie was about to give in to despair, she finds a pamphlet advertising a squire's test for the Royal Knights of Orstoll - beginning her journey of friendship, hard work, and guts, along with masquerading as a boy to walk her second path in life. What will Fie find along the way?
(Source: J-Novel Club)