History Film / OurLittleSister

* BrokenPedestal: A lot of Suzu's angst comes from the fact that her mother fell for a married man and supposedly ruined her older sisters' family. She eventually learns that it's ok not to be blind to her parents' mistakes, but it's also important to forgive them.
* ChildrenRaiseYou: A common theme. Sachi had to look after her psychologically fragile mother and her younger sisters. Suzu also is introduced looking after her theatrically grieving stepmother and her little son. Sachi gets very quickly that Suzu is left raising all by herself.
* ChristmasCake: Sachi is around thirty and still unmarried (she is involved with a married doctor). Her great-aunt worries that adopting Suzu would further dire Sachi's marriage prospects, but Sachi isn't listening.

* DeceasedParentsAreTheBest: {{Discussed}} and {{Inverted}}. The father was apparently a very kind and imaginative person, but his flaws are not overlooked by the elder sisters, who rightly resent him for abandoning them. [[spoiler: Even Suzu, who was the closest to their father, drunkenly confesses to having resented him for being forcing to be his caretaker during his illness.]]

* ReallyGetsAround: Yoshino has a series of deadbeat, emotionally needy or unavailable boyfriend who usually end up dumping her. [[spoiler: She gets better at the end starting to date a kindly co-worker.]]

* SliceOfLife: The film has no conventional plot, but focus on the daily life of the sisters and the conflicts that arise in some situations.

* UnbalancedByRivalsKid: The three elder sisters' mother is polite towards Suzu but rather cold. Unsurprisingly since she was dumped by her husband's for Suzy's mother. However, she comes around quite soon, and brings a present to Suzu when she visits her daughters.
* UnderstandingBoyfriend: Sachi has a married lover, who quite unusually provides useful advises for her family life and is generally supporting. [[spoiler: They eventually end the affair and he moves outside Japan, but end things amicably.]]

* NuclearFamily: Inverted. The family consists in three adult sisters and one teenage little sisters. The parents are deceased or absent.

* PracticallyDifferentGenerations: The entire premise is having three adult sister being the guardians of a teenage half-sister.

* TheBabyOfTheBunch: The entire premise is having three adult sister raising their teenage half-sister.

* UnbalancedByRivalsKid: The three elder sisters' mother is polite towards Suzu but rather cold. Unsurprisingly since she was dumped by her husband's for Suzy's mother.

* DeceasedParentsAreTheBest: {{Discussed}} and {{Inverted}}. The father was apparently a very kind and imaginative person, but his flaws are not overlooked by the elder sisters, who rightly resent him for abandoning them.

* HappilyAdopted: Asano is happy to live with her older sisters.
* NuclearFamily: Inverted.
* ParentalAbandonment: Both parents of the older sisters left them. The film begins as their father dies after fifteen years of absence; and their mother is still alive but not there.
* PromotionToParent: Sachi, the older sister, is the head of the family.

* UnknownRelative: What Asano is to her older sisters in the beginning.

!!Tropes:

This happens in like ten minutes. Then only daily life things happen but they have to deal with them.

* SliceOfLife

Our Little Sister is a 2015 Japanese drama by [[Creator/HirokazuKoreEda Kore-Eda Hirokazu]].

This happens in like ten minutes. Then only small things happen but they have to deal with them.

* SailorFuku: Asano wears this when first meeting her older sisters.

SailorFuku: Asano wears this when first meeting her older sisters.
SiblingTeam: These three then four sisters live together, the older one acting as head of the family.

This happens in like ten minutes. Then only small things happen but they have to deal with it.