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)

Although she was reborn into a duke's family, Etowa was born with almost no magical power. Because of this, she was branded with a "disqualified" mark on her forehead! One day, five children are gathered from branch families. They are to serve as Etowa's guards until she turns 15, and the best one among them will become the heir to the duke's family. However, Etowa has an amazing ability given by a god, that she completely forgot about――?! A heartwarming fantasy about the strongest kids!

This is basically what the title describes: a daily life of a girl and her best friend. Of course with a little bit of twist.