Blue Seed

Made in 1994, Blue Seed is (loosely) based on the Izumo cycle of Japanese mythology and the tale of the god Susanoo and the eight-headed monster Yamata no Orochi. The original manga was written by Yuzo Takada and was made into a 26 episode anime series.

Momiji Fujimiya, a normal middle school girl, is one day stopped on her way to school by a cat eyed man with greenish hair and magatama beads (read: blue seeds) who calls her "Kushinada" and then tries to kill her. Momiji is saved by the sudden appearance of two government officials, one of whom shoots the man in the arm and sends him fleeing.

Momiji is intrigued as to why she was referred to as "Kushinada". She discovers that "Kushinada" refers to an ancient princess whose blood holds the power to stop the ancient monsters known as Aragami by sending them to an eternal sleep. Momiji dismisses the idea that she could be such a person, despite the fact she lives with her mother and grandmother in a shrine in Izumo. However, she soon changes her mind after vines begin to appear from every crack and opening attempting to capture her as they whisper "Kushinada".

Momiji tries to escape, not knowing that the vines are being employed by a powerful Aragami known as Orochi. Fortunately, she is saved by the man with the magatamas embedded into his hands, who introduces himself as Mamoru Kusanagi. He confronts Orochi using Momiji as bait. The plan fails and the government officials appear again. They reveal themselves to be members of the Terrestrial Administration Center (TAC for short), and manage to subdue Orochi. However, with the last of its strength, it makes a final attempt on Kusanagi.

Momiji saves Kusanagi by taking Orochi's blow. Impaled by the Aragami, instead of dying, she is instead fused with the magatama, more specifically identified as a mitama, which gives Momiji the ability to sense the presence of other Aragami. The TAC agents explain that they are an organization dedicated to defeating the Aragami, who seek to destroy humanity. The current Kushinada, Momiji, must aid them because the other Kushinada, Momiji's twin sister, is thought to be dead. Momiji, wishing to discover more about the twin sister she never knew and also to fulfill her destiny, agrees to join the TAC under the protection of Kusanagi, who wishes to destroy his former masters, the Aragami.

The story becomes increasingly complex with the appearance of Murakumo, a man with eight mitamas who kills any Aragami he comes across for his own personal reasons. Kusanagi repeatedly attempts to kill Murakumo. Then Momiji's twin Kaede reappears along with a strange energy field in Tokyo, and Murakumo and Kaede's plans soon become clear - they intend to resurrect the god Susano-oh and purify the world of humanity's influences, with Kaede acting as the leader of the movement.

There is also a three episode OVA, Blue Seed Beyond, which takes place two years after the end of the TV series. It concerns what seems to be a resurgence of aragami, and introduces a new character, Valencia Tachibana. Like Kusanagi, she was implanted with a mitama without turning into a full aragami.

Also has nothing to do with the "sour, yet refreshing" spice from the Lost in Blue games.

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This show provides examples of:

 * Action Girl: Koume and Sakura.
 * Also Valencia in the OVA.
 * Adaptation Expansion: Whereas many anime Overtook the Manga, the manga for Blue Seed was only two volumes, so the anime added some episodes focusing on the characters. The fact that there were also Aragami attacks kept these from being outright Filler.
 * Alien Blood: Aragami and half-aragami have green blood.
 * Anticlimax: In the OVA,
 * Apocalypse Maiden:
 * Badass Normal: Sawaguchi Koume. Her philosophy can be boiled down to "Bigger Gun."
 * Barbie Doll Anatomy: Averted as part of the OVA's fanservice.
 * Barrier Maiden: Kaede and Momiji.
 * Big Ol Eyebrows: Used... interestingly. Rather than give Kusanagi bushy eyebrows, he ends up with four normalish ones. This is Lampshaded in an Omake.
 * Blade Below the Shoulder
 * Bodyguard Crush: Momiji on Kusanagi.
 * Book Ends: The first and final omakes end with the same scene: Momiji blasting the heck out of Kusanagi and Kunikida.
 * Brick Joke: The first omake has Kunikida buying sexy pictures of the TAC girls from Kusanagi, with the ones of Momiji still being developed. Then Momiji shoots them with a machine gun. In the thirteenth and final omake, those photos are finally developed and seen just before Momiji again shoots them with a machine gun.
 * Bring My Red Jacket: Kusanagi, though the blood thing doesn't fit so much, since his is green.
 * Broken Bird:
 * Momiji actually called them on out on this in the third episode when they tried to do it to her. That time around, they listened and made her a full-fledged member.
 * But Not Too Foreign: Yamazaki Sakura, Japanese but raised in America after her mother died.
 * Chivalrous Pervert: Kusanagi
 * Clothing Damage
 * Conspicuously Light Patch: Lampshaded in episode 3 of Omake Theatre.
 * Cool Old Lady: In episode 12 of Omake Theatre, Momiji's grandma goes clubbing.
 * Day in The Limelight: Each TAC member gets an episode, usually for Character Development.
 * Dojikko: Momiji
 * Excited Episode Title: All but two titles.
 * Evil Twin: Kaede to Momiji.
 * Fake American: Sakura again, who will occasionally try to curse in English. "Sohn obe ah beachy!"
 * Fan Service: Yaegashi's computer program to predict the weakness of enemies can also be used to figure out what kind of panties Momiji would be wearing that day. She was unamused.
 * And then there is Sakura groping Momiji's breasts in Beyond, just to admire how much they'd grown.
 * Valencia provides a lot of fanservice all on her own.
 * How many times we've seen Momiji's panties?
 * Gag Dub: The monster movie omake, at least in the English version, was a take on old, poorly-dubbed kaiju films.
 * Gainaxing: Namely in Beyond.
 * Godiva Hair:
 * Goofy Print Underwear: A running gag with Momiji.
 * Gratuitous English: See entry for But Not Too Foreign, above. The shift in Sakura's pronunciation from "Mommy" (American) back to "Mama" (Japanese--Engrish, but still Japanese) actually marks an important turning point in one episode.
 * Also MYSTERIOUS TOKYO! HOOK ME UP FOXY NIGHT GAME!
 * Green Aesop
 * Hellish Pupils: Kusanagi's are slitted like a cat's; Murakumo's have the whites and the pupils inverted, colorwise, in one form.
 * Kusanagi's eyes are Lampshaded in one of the omakes.
 * Hot Springs Episode: The third OVA episode, in which the team must deal with a bomber and some monkeys.
 * Idol Singer: One episode has a contest for it, that Momiji is tricked into entering. It's actually justified because her voice actress is also a singer.
 * I Have the High Ground: Murakumo loves doing this.
 * Kotono Mitsuishi: Koume's voice actress.
 * Limited Wardrobe: One Omake has Matsudaira wondering why Kusanagi always wears the same clothes and if he ever takes them to be cleaned. This is even more amusing when you consider that Kusanagi's trademark red coat tends to get literally torn into small pieces during his transformations, yet in the next episode it is usually seen again, undamaged.
 * May December Romance:
 * Meaningful Name: Kusanagi Mamoru. Mamoru mean "to protect," and Kusanagi is the holy sword of the Japanese emperors, which apparently once belonged to Susano-o. It means the grass cutting sword (long story). Murakumo, the cloud cluster sword, is another name for the same sword and is the name of another character. He's trying to kill Kusanagi.
 * Megumi Hayashibara: Momiji's voice actress. She also sings the ending.
 * Monster of the Week
 * More Dakka: Koume's battle philosophy resolves around this.
 * Mysterious Protector: Kusanagi.
 * Naughty Tentacles: episode 2
 * Nerd Glasses: Sakura, when she's in Miko mode.
 * Omake: Loads of shorts poking fun at the show, and some animation conventions.
 * Onmyodo: Sakura's magic.
 * Ordinary High School Student: Momiji
 * Orochi: One of the aragami.
 * Panty Shot: Apparently Momiji cannot walk five feet without exposing her cute cartoon character underwear -- at least until the Mood Whiplash.
 * Public Domain Artifact: The Imperial Regalia of Japan provide names and imagery throughout the series -- see the entry for Meaningful Name, above, for one example.
 * Real Trailer Fake Movie: One of the Omake shorts makes the series look like a Toku Kaiju film. The English dub even has intentional crappy voice acting and timing.
 * Replacement Goldfish: Momiji's twin sister was no longer available to be used to quell the problem, so the job fell to her.
 * Running Gag: Once an Episode Momiji's underwear gets exposed, along with the cute picture of a cartoon animal on them, much to her embarrassment.
 * Also, less frequently, Kusanagi teasing Momiji about her chest size.
 * Sacred First Kiss
 * Separated At Birth: Momiji and Kaede
 * Shipper On Deck: Koume ships Kusanagi/Momiji.
 * Shrines and Temples
 * Small Girl Big Gun: Koume
 * Spoiler Opening
 * Super Deformed: In the Omake.
 * Surprisingly Good English: The US Navy officers were voiced by American actors and are a big contrast to Fake American Sakura.
 * Theme Naming: Besides the Meaningful Names, every important character is named after trees. The twins Kaede and Momiji are named by two words for the same tree, the maple.
 * Theme Tune Cameo: Momiji hums the ending in an Omake.
 * Tonight Someone Kisses
 * Tokyo Is the Center of The Universe: It's really amazing how many bad things happen there, and no wonder why at the end of the series, America has sent a fleet to just put it out of its misery.
 * Took a Level In Badass: Yoshiki Yaegashi starts out as a wimpy computer nerd, but mans up by the end of the series and gets the girl
 * Two Act Structure: The first 13 episodes are standard Monster of the Week fare that serves to set up the premise and flesh out the characters. Once Kaede pops back up, the remaining 13 episodes has things get darker and focuses on setting up for the finale.
 * Unusual Ears: Murakumo's are pointed, as are Valencia's.
 * Utopia Justifies the Means: Kaede and Susano-oh's goal is to turn Japan into a green, unpolluted paradise... by turning all the humans into plants.
 * Virgin Power
 * You Gotta Have Blue Hair: Ryoko has purple hair, which could be written off as stylized black. Kusanagi and Susano-oh have green hair, which is Justified by their connection to aragami... But then you get Valencia, whose hair is bright pink.
 * Whip It Good: Valencia uses one.