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Manga / Yui Kamio Lets Loose

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What is the terrifying secret behind beautiful honor student Yui Kamio's hair?! And why must she always keep it tied up? Super popular Kiito's high school life is plunged into chaos by the worst classmate imaginable!

Yui Kamio Lets Loose (Kamio Yui wa Kami wo Yui) is a manga series by Hiroshi Shiibashi which is featured in Shonen Jump.

Tropes in the series:

  • Bait-and-Switch: Mushi grant superhuman powers while feeding on their victims acting out their worst fantasies. Yui in Black is not one of them because Yui's Three Corpses and Nine Worms mushi feeds on Yui holding herself back.
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  • The Beautiful Elite: The Life Lovers, a group of fabulously wealthy and privileged students whose life is a game on easy mode.
  • Be Careful What You Wish For: In chapter 1, Kiito wishes for a girl who could make an impression on him and then moments later he meets Black!Yui Kamio who does so (with punches and kicks upon him).
  • Big Fancy House: Kiito's house is a large mansion.
  • Bound and Gagged: Yui got this treatment in chapter 11 and was freed in chapter 12.
  • Catch a Falling Star: In chapter 2, Kiito catches Yui in midair as she fell from the height of the third floor of a building in Teiyo Private Academy.
  • Cerebus Syndrome: Watch Yui solve problems with violence and Kiito solve problems with money! Wait, what's a mushi?
  • Chekhov's Boomerang: The White!Yui wig Kiito wore in chapter 6 is used by Black!Yui to disguise as White!Yui.
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  • Defeat Means Friendship: All of the delinquent girls that Kiito removes the mushi from end up in his friend group. At least one of them seems to have a little crush.
  • Demonic Possession: All mushi to their hosts. Chapter 28 shows a mushi entering a host orally.
  • The Dog Was the Mastermind: The person seemingly behind all the mushi incidents to date: the young priest from the temple.
  • Elaborate University High: Teiyo Private Academy which is an Elevator School. It at least goes from Kindergarten to High School. It also has a large sports field
  • Epunymous Title: The title reference the poster girl Yui Kamio and what happens when her hair is let loose.
    • When her hair is let loose (unbounded), her original personality is let loose (freed) and she would let loose (take out) her frustration on others by letting loose (beating them up).
    • The Japanese title, "kami" also can mean "hair".
  • Fake-Out Make-Out: In chapter 2, in order to give some trespassing delinquents the slip, Black!Yui grabs Kiito by the necklace chains he was wearing, pulls him close to her so that his body hides her from sight and puts a pen to his neck while their faces are close to each other which makes them look like a couple making out.
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  • Hilarity in Zoos: In chapter 5, Kiito goes to the zoo to look at the animals and runs into White!Yui and Nao. Nao then excuses herself and it becomes a date between Kiito and Yui (with Nao sneakily watching them). It goes mostly well despite Kiito's awkwardness around White!Yui due in part of despite having an Urban Legend Love Life, he never actually been alone on a date with a girl before. While they were having ice cream (while Kiito was aside getting advice from Nao), a performance monkey stole the Sanzo chain off of White!Yui turning her into Black!. Black!Yui then teases Kiito with her ice cream before smashing it into his face and proceeds to continue the date by dragging him by the hand. For a moment Kiito thought of sealing her but had second thoughts and lets her have fun and he also has an easier time talking with her. It was then a lion appeared due to the previous monkey stealing the key to its pen and unlocking it, causing most of the guest to panic. Black!Yui takes it upon her self to subdue it and uses one of Kiito's Sanzo chains, tieing it on the lion's mane and pacifies it. Black!Yui then announces that she wants to take him home prompting Kiito and Nao to seal her back to White!Yui before she actually does so.
  • Hyde Plays Jekyll: In chapter 9, Black!Yui pretends to be White!Yui when all the chains were mysteriously gone/stolen.
  • Incorruptible Pure Pureness: Yui in White, being all the positive aspects of Yui Kamio distilled. Subverted in chapter 14 when Yui reveals she's depressed and would prefer to have Yui in Black's confidence and attitude.
  • Interrupted Suicide: In chapter 9, Yui Kamio (Black! disguised as White!) stops a would-be suicide in the train station and was beating him up for it and his subsequent attempts.
  • Japanese Delinquents: Featured in this work.
    • Yui, prior to her black self's sealing with the Sanzo Chains, had conquered every delinquent gang in the country.
    • Half of the early chapters feature bullies hunting Yui looking for revenge. And all of the recent chapters are about super powered girl delinquents hunting down Yui Kamio.
  • Knight of Cerebus: Honoka showing up changes the premise from a slice of life comedy to an action-horror plot about creatures called "mushi" that grant people incredible strength and drive them to act on their hidden desires.
  • Money to Throw Away: In chapter 7, Kiito throws some money to distract the students in the school's indoor basketball court as he chases Yui in Black who was in a Stripperific outfit of thigh-high socks while wearing a swim parka that shows off Absolute Cleavage.
  • Mystical White Hair: A sign of mushi possession.
  • Nosebleed: In chapter 7, Nao gets one when she sees Yui in White get a Sexy Soaked Shirt with her white uniform as they were cleaning the pool. Later that chapter, Kiito gets one when he sees Yui's white panties.
  • Panty Shot: In chapter 7, Yui gives these to Kiito. As Yui in Black, she shows her black panties to assure him that despite going around the school in a partially zipped swimmers parka with no bra she is at least wearing them. As Yui in White, she accidentally shows her white panties after reverting back while still tangled in the trap Kiito placed to capture Black!Yui.
  • Parasol of Prettiness: In chapter 5, White!Yui has a white one while she was visiting the zoo. It changes into black when she turns into Black!Yui.
  • P.O.V. Boy, Poster Girl: Kiito is the P.O.V. boy and Yui is the poster girl.
  • Product Placement:
    • In chapter 6, GRAVITY INDUSTRIES' "Iron Man Suit"note  that was sold by SELFRIDGES was shown in the possession of Kiito which implies that he or his family bought it In-Universe.
    • In chapter 10, Black!Yui, Kiito and Garasha play Twister by Milton Bradleynote .
  • Rich Idiot with No Day Job: Kiito is the schoolboy version of this. The other male Life Lovers may fall into this as well but fell Out of Focus first.
  • Sexy Soaked Shirt: In chapter 7, both Nao and White!Yui had their white uniforms get wet during pool cleaning.
  • Shared Universe: Shares one with Nura: Rise of the Yokai Clan as Ryuji Keikain appears at Yui's behest in Chapter 14.
  • Shout-Out: To Journey to the West, the chain of Sanzo that binds Yui is the golden fillet of obedience that was used on Son Goku.
    • In chapter 1, when the gang leader remembers how Yui beat him and his gang back in 5th grade, the encounter is depicted as one to original Generation 1 Pokémon wild encounters.
  • Shower Scene: In chapter 8, there were two with the first featuring Kiito and the second was with White!Yui.
  • Vapor Wear: In chapter 7, Black!Yui goes about Teiyo Private Academy in a partially zipped swimming parka and black thigh high socks due to getting her clothes wet while as White!Yui. It exposes her with Absolute Cleavage showing that she wasn't wearing a bra. Black!Yui teases Kiito into wondering whether or not she was wearing panties. After Kiito finally corners her, she relents and gives a Panty Shot to him to show that she was properly wearing panties.

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