Compilation of TV Tropes pertaining to this kid. Good luck.

A Match Made In Stockholm: A little.
All Gays Are Promiscuous: Hmm...
Big Brother Instinct: Toward Luca, ofc. Incites it in a few others, as well.
Break The Cutie
The Chessmaster: SOMETMES, YES.
Creepy Child: Some people have noticed.
Dark And Troubled Past
Deal With The Devil: dat tongue
Dude Looks Like A Lady
Eternal Sexual Freedom: HOW DID HE GET AWAY WITH THOSE SHORTS IN VICTORIAN ENGLAND??
Fetish Fuel: Very self-aware, here.
Foil: Indisputibly Ciel's.
Freudian Excuse: ALL OVER THE PLACE.
Harem Seeker: lmao, you'd think.
Ho Yay: Everywhere.
I Didn't Mean To Turn You On: (he did)
I Just Want To Be Loved: SO BADLY.
Jerkass Woobie: He's a little shit.
Knight Templar Big Brother: "Brother, someone bullied me today." "I WISH EVERYONE WAS DEAD."
Looking For Love In All The Wrong Places
Love Hurts: And how.
Love Makes You Evil: Or at least a little crazy.
Man (Boy...) Of Wealth And Taste: dat frock coat
Perverse Sexual Lust: Sorry, multiple people...
Please Don't Leave Me
Promotion To Parent
Royal Brat
Stupid Sexy Alois: I KNOW, I KNOW.
Troubled But Cute
Troubling Unchildhood Behavior
Unresolved Sexual Tension: Oops.
Urban Legend Love Life: A little bit. As far as SP goes, he's only ever flirted. Okay, mostly. There've been a couple of incidents. Even so.
Villainous Fashion Sense: dem... boots
Yandere
Zettai Ryouiki: Oye.