Basic Trope: A woman who conforms to classic Japanese ideals of femininity.
Straight: Sakura is somewhat pretty and she has a demure personality. She is also devoted to her friends, family and the man she loves. She writes haiku and performs tea ceremonies. However, while she's certainly polite, she's not a pushover, and can be firm when she needs to be.
Sakura wears a formal kimono every day and literally does nothing but bow, smile and serve tea even as a yokai-on-yakuza battle royale erupts around her. Until one of the combatants bumps into the table and knocks one of the teacups off, breaking it. At which point she politely but firmly asks them all to take their fight elsewhere. Which they do.
She is the daughter of a Big Good mother and all of her three sisters are members of an action ensemble, so you would think that she would be implicated in public affairs and somehow rebellious against paternal authority when it takes bad decisions. When everyone is this close from a possible dimension-altering incident, she kindly serves tea to Cthulhu and regrets Satan's absence, as her father, an extremely Corrupt Corporate Executive, had cordially invited him. All this while remaining indisputably Lawful and undoubtedly Good. She firmly insists that all the Eldritch Abominations around the tea table remain Affably Evil at least for the duration of her reception.
Downplayed: Sakura sometimes sets her own personal goals over her friends, family or her husband, without ignoring the people she's devoted to. While she may be well versed when it comes to art, she isn't obsessed with it. Sakura never initated a giant Freak Out, but she is sometimes more offensive and active, than she is supposed to be. Nevertheless, she still retains her elegance. In short: She occasionally fails at Silk Hiding Steel.
Justified: Sakura is from a traditional Japanese family and thus was raised to have these sorts of values.
Parodied: Sakura's hair is so long she trips on it and her body is hidden by exaggerated and puffed up traditional clothing. She speaks in nothing but flowery haiku that no one understands. She conducts a tea ceremony with beer and is quickly drunk as a skunk.
Sakura was undercover as a Yamato Nadeshiko, but is like that in her personal life too, but only to make her parents happy, until it turns into a habit and she does it when they're not around.
Sakura is a street girl who looks the part with long dark hair in a Hime Cut and is regularly polite to others but this is because she can't find anything to cut her hair, her politeness is really Tranquil Fury and she refers to herself with Bokukko. Then she married a noble who fell in love with her and at their wedding she is a picture perfect YN in appearance and speech patterns. However, this is because she rehearsed with tutors and is a tomboy in private. Then her family castle is besieged by Samurai from a rival clan she takes up a naginatato protect her family and fights beside her husband. When the siege is over she washes blood off her kimono of which none is hers.
Averted: Sakura is not particularly demure, domestic, or into Japanese culture.
Enforced: Sakura is from a show where the writers are trying to teach about traditional Japanese values, and they want to teach about the traditional Japanese ideal woman.
Lampshaded: "It's like you came out of a Japanese show where the women are all sweet and traditional."
Invoked: Sakura decides that, in order to be more feminine, she'll have to become a Yamato Nadeshiko.
Sakura might not show it, but she her self esteem is damaged because she puts others' needs always before her own. Alternately, she puts the needs of others before herself because she has such low self-esteem.