Witchcraft Works

Witch Craft Works is a seinen manga about Takamiya Honoka, an ordinary student who sits next to Kagari Ayaka, the most popular girl in school. Their interactions are limited because her fan club assaults him for simply speaking to her. But when the school's clock tower falls towards Takamiya, Kagari rescues him while flying on a broom. She proceeds to incinerate some monsters and reveals that her mission is to protect him.

Tropes include:

 * Absurdly Powerful Student Council: The ranking in the school goes from the Chairwoman, to the current reigning Prince or Princess, then the Student Council, and then the Teachers. After the Student Council President tries to break up Takamiya and Kagari,
 * Achilles Heel: Kagari is made of fire and as such is effectively invulnerable
 * Arranged Marriage: Between Kagari and Takamiya
 * Berserk Button: You don't try to separate Takamiya from Kagari. Else savor a good amount of Tranquil Fury from her.
 * Big Brother Attraction: Takamiya's little sister has one but is in denial, claiming her actions (such as joining him when he is taking a bath) is merely her right as his little sister.
 * Brutal Honesty: Kagarai seems to be fond of this
 * Bridal Carry: Takamiya gets this treatment frequently from Kagari whenever she rescues him.
 * Catapult Nightmare: Takamiya has one when he dreams Kagari is his older half-sister.
 * Chronic Hero Syndrome: Takamiya has this.
 * Cross Counter:
 * Clarke's Third Law: explicitly referenced.
 * Effortless Amazonian Lift: Kagari carries Takamiya all the time, especially when she rescues him.
 * Even the Girls Want Her
 * Flying Broomstick
 * Hot Mom: Kagari's mother looks more like her sister than her mom.
 * Hot Witch
 * Humanoid Abomination: Kagari
 * Instant Fanclub
 * Kill It With Fire: Kagari signature style of fighting.
 * Knight Templar: Kagari once more. She justifies using magic on bullies attacking Takamiya on the basis 'If someone attacks Takamiya, that person must be a chaos witch.'
 * Non-Action Guy
 * One Head Taller: Best seen in this panel
 * Playing With Fire
 * Protectorate
 * Remember the New Guy: A minor one, Takamiya's sister isn't even mentioned or hinted at until chapter 7 where Takamiya narrates who she is.
 * Robe and Wizard Hat: Justified because it keeps them invisible from muggles.
 * Scenery Porn: The detail added in the chapters are breathtaking
 * Schoolgirl Lesbians: Takamiya's mom flat out tells her children that she had this relationship with Kagari's mother, and that they would have gotten married if they could have. So instead they decided to have their children marry as their way to become a family.
 * Sleep Cute: Chapter 6
 * Sugar and Ice Personality: Kagarai
 * Tall, Dark and Bishoujo
 * Tiny Guy Huge Girl: Kagarai is at least a head taller than Takamiya
 * Violently Protective Girlfriend: Kagari in spades.