These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
YMMV: Tantei Opera Milky Holmes
Badass Decay: Used in plot to justify the Milky Holmes' suffering. Not only do they lose their Toys from the get go they get dumber and more inept as the show moves on completely destroying whatever reputation they apparently had before.
In their defense, the show itself didn't bother to explain exactly HOW they got their toys and become magically competent after two seasons of damedame. And the PSP game is well established to be in an alternate universe to the main anime series, which the alleged sequel claims to be a continuation of.
Cargo Ship: Some mix of Screw Yourself and this. Twenty is in love with a hug pillow of himself. He gets angry when Mary and Kate interrupt his "date between me and me!"
Evil Is Sexy: Arsene, most strongly established in the ending. You can see how she gets her subordinates.
Foe Yay: Arsene has a clearly unhealthy fascination with Sherlock. Both Sherlock.
Fridge Logic: How does Milky Holmes notice Mary and Kate in their thief outfits but not Arsene and her goons?
Les Yay: Hercule/Nero, Sherlock/Nero, Kokoro/Sherlock, Kokoro/Irene, Cordelia/Pretty much any girl, are all pairings that have been suggested with various degrees of explicitness within the show itself.
Let's just say that Arsene's obsession with Sherlock drives the whole story.
Futari wa: For Kazumi, it doesn't matter if the world is upside down, as long as she is with Alice, who to her is "shining, beautiful, and like a kitten".