Princess Lucia

Koizumi Yuta is a 14 year old boy who has quite a bit of a problem. The demon princess of the magical world, Lucia, has to procreate with him. That child would have the ability to engulf the entire world for 7 whole days. Mikamoto El and Kasukabe Rie are the two angels assigned to make sure that doesn't happen. Kasukabe Rie happens to be the girl he likes. Just how is he going to survive this ordeal?

Tropes used in Princess Lucia include:

Acme Products: El is always seen shopping at an angel store, though most of the products don't work the way she plans. Though this could be because the one that owns the store is actually a demon and devoted servant to Lucia's family.
Awesome but Impractical: Bezzle's giraffe style in the Mixed Horse Fighting, despite giving her a height advantage it is impossible to balance.
Beach Episode: Chapters 3 and 4.
Berserk Button: Do not hurt Yuta in front of Lucia, or you will regret it.
Betty and Veronica: Lucia and Rie
Biggus Dickus: Levi claims Yuta's "boob down there" is big.
Big No: [1]
Bribing Your Way to Victory: Bezzle bribed the referee to allow her Giraffe style in the mixed horse fight.
Can't Hold His Liquor: Rie, who with a single drop of alcohol will change into her Desire Form as well as be completely drunk.
Catch Phrase: "Levi's a Genius" (not really)
Chekhov's Gun: At the end of Chapter 18 when Rie and El walk into Lucia's ramen shop to find all of the demon girls naked and on top of Yuta, you can see Rie's glasses crack. The next chapter reveals that her glasses actually suppress her feelings of lust and jealousy to which have been building until they cracked from the sight.
Children Are Innocent: Despite Lucia wanting to sleep with Yuta, she has absolutely no experience and often stops herself because of it.
- Levi
- Behemoth
Class Is in Room X-01
Clothing Damage: A common occurrence in the manga.
- Though in Lucia's defense, she was trying to kill them.
Covert Pervert: Rie who's feelings of jealousy and lust are suppressed by the glasses she wears.
Crash Into Hello: Yuta is forcefully made to do this to Bellze by her servants.
Death Glare: Every guy towards Yuta with his Unwanted Harem.
Double Standard Rape (Female on Male): Lucia tries to "make a child" with Yuta every change she gets.
- Though in her defense she doesn't really want to personally. Even expecting El and Rie to stop her before it ever gets too far.
Easy Amnesia: Levi
- As well as everyone else by the angels to usually cover up their activities.
Everything's Better with Princesses: Lucia the Princess of the Demon World.
Eye Beams: Lucia does this to prove she is a Demon to Yuta, and towards anyone who annoys her.
Eye Scream: Lucia and Bellze servants poke Raguel's eyes out, through his glasses.
Fantastic Racism: Rie informs Yuta that angels are taught to believe all demons are evil. But she herself is beginning to question that the more time she spends with Lucia.
Fish People: Levi in human form.
Green-Eyed Monster: Lucia seems to get this way every time Yuta is seen with Rie.
Half-Human Hybrid: Pretty much the goal of the demons is for Lucia to have a child with a human.
Happiness in Slavery: Bellze highly powerful demon servants truly care and wish to serve her. In one case when they were nearly killed by Lucia, one of her servants hoped that when she is reincarnated she could come back to serve her.
How the Mighty Have Fallen: Bellze says this word-for-word about Lucia's predicament.
Innocent Fanservice Girl: Levi has no qualms of walking around completely naked.
I Read It for the Articles: Yuta states he only uses porn magazines for reference material for his drawings.
I Was Just Joking: When Yuta states he was drawing all night, El suggests he was actually looking at porn magazines all night. Yuta believes she was peeping on him again where she replies she was just kidding then states making fun of him for reading them. He explains, quite nervously, that he uses them for reference material.
Missing Mom/Disappeared Dad After the Angels tricked Lucia's father out of his land, her mother ran away.
- Yuta's dad has yet to be mentioned.
- Also Levi's mother vanished.
Love Potion: Lucia tries these on Yuta with mixed results.
Moment Killer: Expect one every freaking time one of the girls are alone and starting to finally get close to Yuta.
- To the point Lucia even expects the angels to perform a Moment Killer anytime she gets too sexually close to Yuta.
Not What It Looks Like: At least every chapter.
Number of the Beast: Yuta was born June 6th of the 6th year of Heisei, at 6:06:06 am.
Oblivious to Love: Yuta doesn't seem to realize that Lucia or Rie have true feelings for him.
- Taken Up to Eleven in Chapter 19 when Rie succumbs to her desires strips bare naked and confesses her feelings for him, he STILL DOESN'T GET IT!!!
Older Than They Look: Lucia states she is 100,014 years old.
- Unknown for El and Rie, however they have been watching over Yuta since he was a kid. Although Rie is at least old enough to have destroyed Sodom and Gomorrah which was in 3000 BC.
- The Art Club Adviser Shiori Houjou looks like a grade schooler. And despite wanting to be treated like an adult, she defiantly doesn't act it.
Open-Minded Parent: Yuta's mom seems to have given her blessing for Yuta to be with Lucia in a sexual way.
- Even later with El, Rie and Lucia with Yuta at the same time, commenting "It is better if boys are energetic."
Our Angels Are Different: Rie seems to believe that Lucia, the princess of the Demons, is more pure than the angels.
Our Demons Are Different: It would appear all that is left of their domain is that Ramen Shop.
Parental Abandonment: Lucia's mother left her and her father.
Precision F-Strike: Lucia when she is especially angry.
The Promise: Yuta promises Lucia that he will be her friend. Later Rie, revealing herself to be an angel and telling him that she will be with him if he cuts all ties with Lucia, he rejects her offer due to this promise.
Really Seven Hundred Years Old: Lucia, being 100,014 years old. Doesn't stop her from acting like a 14 year old though.
Rich Bitch: Bellze
Running Gag: El always seems to appear right behind Rie.
Satan: Lucia's dad
Shipper on Deck: Rie seems to have an interest in Lucia's and Yuta's relationship, deliberately preventing her higher ups from knowing a Demon has made contact with him just to see how the relationship turns out. Despite her own secretive feelings for him.
Sick Episode: Chapter 11
Spit Take: You would too when you found out the fish stock is actually Levi's bath water.
Super Strength: All the Demons and Angels have shown this.
- Yuta, a side affect of the Love Potion that caused him to hug a tree in half.
Sympathy for the Devil: You just can't help but feel bad for how Lucia's family turned out.
The Ojou: Bellze is referred to this by her servants.
Third Person Person: Levi
Tomboy and Girly Girl: El and Rie.
Tomboy Princess: Bellze refers Lucia as one.
Truth Serums: Levi gives this to Yuta under the belief it is medicine that will get rid of his cold. He tells Lucia he was glad that she game to look after him while he was sick, but she mistakes this as the affect of another medicine Levi also gave him.
Tsundere: Lucia
Unwanted Harem
What Happened To The Angel: On some chapters it will have it to where normally El and Rie would have stopped it long before it got that far, even Lampshaded by Lucia at one point. Often the very last panel of the chapter shows that they were distracted by something else at the time, usually they were out shopping.
Wounded Gazelle Gambit: Bellze Servants do this when Lucia threatens them here.
You Gotta Have Blue Hair: El has blue hair.
Younger Than They Look: Yuta, despite looking and acting somewhere to his late teens, he is only 13 years old.