The objects representing the sins are a sword for Lust (a sword being a symbol of virility in some circles as well as the obvious...), a drinking glass for Gluttony (drinking glasses often being used at fancy dinner parties), four mirrors for Pride/Vanity (obviously), a clockwork doll for Sloth (a clockwork doll cannot move or do anything on it's own), a set of sewing scissors for Envy (well, okay this was in the song), a silver spoon for Greed (as in "born with a sliver spoon in your mouth"), and a Golden Key which turns into a knife with body heat for Wrath (an emotion normally associated with heat).
Speaking of the Seven Deadly Sins, why did Eve's death release them? Because she had all seven within her; she felt despair at the loss of her children (Sloth), which then turned into hatred of others for having children of their own (Envy), a desire to take children of her own (Lust and Gluttony), stole from someone to do it (Greed), felt she deserved it more than someone else (Pride) and killed her to gain it (Wrath).
The chronicles (or at least part of them) seem to be based on an early XVI century painting called "The Seven Deadly Sins and the Four Last Things" (The four last things are: Death (Graveyard), Judgement (Court), Hell (Hellish Yard) and Glory (Heavenly Yard)), considering the Masters' songs is a series called "The Final Four"...
Re_birthday has a four-beat cadence and a four-color motif in the PV not just to represent Germaine, Kyle, Michaela and Rillianne, but also because Four Is Death and the song itself (if one ignores TwiRight Prank) is the fourth song in the Story of Evil series!
The yellow/green/red/blue color motif also shows up briefly in Handbeat Clocktower because the song is an arrangement of Heartbeat Clocktower, which is also known as Clockwork Lullaby 4.
Irregular mentioning that that the blue chains representing someones tears and the red chains representing spilling blood could be a reference to the GEAR who has been depressed since sacrificing his heart and the Master of the Graveyard who has been eating intruders
The first lyric in the chorus of Red Shoes Parade is "Now go forth, the shadow parade", because 1) the parade is a band of evil people and 2) because the PV represents them with shadow puppets.
Why is Gear so loyal to the Clockwork Doll? He's the awakened Vessel of Greed and the partial reincarnation of Gallerian Marlon, who thought of the Clockwork Doll as his daughter.
Why does Michaela like to sing? Because she used to be a bird!
Allegedly, Conchita used to be morbidly obese before an unusual illness depleted her weight. Now you know why she's constantly eating...because the illness left her body feeling empty and she kept eating to fill up that emptiness! Suddenly the lyrics take on a whole new meaning:
Conchita: There's still room in the stomach...
The Clockwork/Clockworker's Doll was created by Abyss I.R., a.k.a. Irina Clockworker.
Hansel and Gretel,in Tale of Abandonment in a Moonlit Night, mention killing a witch and they also mention that this was not their home when they kill her and their father, ie: that they were not their real parents. Ironically, knowing Moonlit Bear and Project MA's stories, all this information is true.
One video for Conchita, the Epicurean Daughter of Evil shows Conchita wearing a neck brace. Of course she would need one, think about what she eats on a daily basis.
Fridge Brilliance paired with Genius Bonus and a Meaningful Name... Lucifenia is accepted to be a counterpart of France. Rilliane is pretty selfish and loves brioche. Now, Rilliane's name has "Autriche" in it. In French, the country Austria... is Austriche. Now, was there ever a member of French royalty who was from Austria and became (in)famous for her luxury and execution? Yes there was- Marie Antoinette.
Considering the Word of God that you need to have a compatible personality in order to become influenced by one of the Sin Vessels, one might wonder why Kyle and Clarith of all people were so susceptible to Pride and Wrath respectively - the former is extremely humble to the point of self-deprecation, and the latter can't bear the thought of taking a life and is stated in the novels to initially be unwilling to act upon her desire for revenge for that reason. Shouldn't they be completely incompatible with the vessels? No, because both of them view the traits that would otherwise render them immune to the vessels' influence as weaknesses and would rather abandon them.
An attitude that could be attributed to Pride and Wrath in and of itself.
On Project 'Ma', there are two overly flowery lines near the end of Adam's part to say that dawn approaches, but when you look at it taking Adam and Eve's Meaningful Names, it becomes far more clear "The Evening Stars were corrupted/The moon and stars dissapeared in the southern sky" refers to Eve's mental unstability thanks to the brainwashing drug, which also tainted her with sin, and Her and Adam eloping to Elphegort, south of Levianta, respectively.
In Daughter of Evil, it is said that Rilliane's execution was scheduled in the afternoon at 3 o'clock sharp, "right when the bells ring". Now, in Servant of Evil, we get to hear the bells... but they toll only twice, not three times as they should at 3 o'clock. Well it's not Rilliane being executed, after all...Daughter of White, we do get to hear the 3 tolls, but it's misleading since Rilliane doesn't die that time.
Prim grew a grudge on Anne after Arth chose her. Not only that ,but Prim and Sweet Ann are from different companies. Prim being from Zero-G and Sweet Ann being from Power FX
Kiril and Irina are siblings could be because Kiyoteru and Iroha were both created by AH-Software Co. Ltd.
Judgement of Corruption: Some lines imply that Gallerian Marlon doesn't only proclaim criminals innocent if they pay him, but that he also is willing to condemn wrongly accused people who don't pay him. The song takes place in a country where the death penalty is still in use. How many innocent people has he sentenced to death already?
The Madness of Duke Venomania: It's known that Lukana became pregnant, but that makes it likely that Venomania never used any sort of contraceptive. This went on for a year with a few dozen victims — how many other women became pregnant? What about Rindo, who is heavily implied to be a young teenager?
It's implied in Flower of the Plateau that Venomania not only got Mikulia pregnant as well, but she was already impure to begin with. When she met her son years after abandoning him after his birth, she kills him to make sure that no-one finds out that she's been with so many men. And didn't Elluka possess Lukana during/after the incident? Was it Elluka who got pregnant?
Word of god states that Conchita is distantly related to Duke Venomania, the tainted bloodline is partially what made her susceptible to her sin.
The boy in Pierrot the 5th is also the boy who was kidnapped in Moonlit Bear. Both Santa and his real mother are played by Meiko.
Conchita's servants are also said to be reincarnations of Hansel and Gretel, word of god saying they constantly reincarnate and seek out women who look like Meiko as she resembles their mother.
Story of Evil: At one point in the novels, Keel Freesis offers the Venom Sword to Kyle Marlon. Although he refuses, he still is severely affected by the demon of Lust just from looking at the sword. What would have happened if he had actually taken it?
It is estabilished that thanks to the events of Twi Right Prank, Riliane forgot about ever having a twin brother, and said brother became her servant Allen. Now, in Servant of Evil, Allen tells Riliane to take Allen's clothes, saying "nobody will be able to tell, surely- we are twins, after all". If he did say not only the "take my clothes" but the last bit out loud, too, then think about this: Riliane is told she has a brother in the person of her most trusted servant- only for said brother to be killed shortly after, without being able to give any answers to her. Riliane's regret just became even more understandable...
In Gift from the Princess who brought sleep, we have Margarita, who snapped and continued to give her "gift" out to people after she most definitely knew what the real effect was. Newspapers were writing about the incidents. How many people might have found out she was behind it all? And how many people did she have to force-feed the "gift" to???
It's revealed that everyone goes to heaven, except for those with HERS. There are two horrific sides to this: