Ohana Matsumae is a sixteen-year-old girl with no purpose or direction in life. One day, however, she gets the chance to reinvent herself when her mother and her boyfriend do a moonlight flit to escape his debts. Left alone, Ohana goes to live with her estranged grandmother, but when she arrives she finds herself forced to work at the family’s hot spring resort, the Kissui Inn. With her grandmother considering her nothing more than an employee and a roommate who hates her, Ohana’s happy dream of a new life soon turns into a nightmare. Now the wide-eyed girl must learn the value of hard work as she attempts to make friends and familiarise herself with life at the resort.
If you enjoyed Fam as a main character--cheerful to the end, naive/innocent and frequently unaware of others' feelings, and dropped into a situation where she sometimes lacks delicacy or doesn't fully realize the ramifications of her actions but continues trying anyway--you'd also enjoy Hana-saku Iroha, where the same type of main character, Ohana, experiences much more character development over the course of the show.
Kanata Sorami, a young Private in the army, arrives in Seize to serve in the Clocktower Fortress and learn the trumpet under the tutelage of Master Sergeant Rio Kazumiya. Though peace hangs uneasily over the world, Kanata finds a relaxing routine of laundry, shopping, and trumpet practice greets her at her new post instead of brutal drilling and discipline. With help from the other members of the all-female 1121st Platoon, Kanata finds her place in the bustling city, bringing joy and humor to the war-weary residents while learning a great deal about the world.
Both stories are about young/cute/innocent/cheerful girls in post-apocalyptic military-type situations (situations that involve a much larger political backdrop than the characters are maybe aware of), although So-Ra-No-Wo-To is a bit more cutesy-slice-of-lifey than Fam, the Silver Wing.