Re: question
Hee, Sherlock and Freya are cute. And don't worry about the wall of text, it's fun to read! /also points to almost every single comment in this entry
Sebastian's thoughts on Kiseki are overwhelmingly negative, but that's because he's so single-mindedly focused on his contract with Ciel, and being stuck in Kiseki =/= not working at his contract. It's less that he dislikes Kiseki and more that he dislikes being in Kiseki. If he were, say, contracted to The Doctor a dimensional traveller and this was just another adventure he'd accept his stay in Kiseki just fine. There are things he finds interesting about it - the magic, all these people from different worlds, that someone or something is so powerful it can just yank him in and keep him put, all the new technology... but it's all overshadowed by This Is Not My Contract And Therefore A Hindrance.
For a nasty demon with no morals, Sebastian is surprisingly appreciative of people, and considering the majority of the people he's been surrounded by for the last three years are either idiots, incredibly incompetent, or both, his standards for what's good company are almost laughably low. Like, he appreciates Wan for knowing stuff about tea, Makoto for knowing how to properly build a fire, Constance for being able to mop floors without messing it up... It's kind of tragic.
He's intrigued by Jamie and Sherlock because they're unusual and intelligent (Stiles would go here too, but Stiles is loud and flaily and Sebastian hates loud and flaily), Korra because she's powerful, all the magic-user/benders because they're new territory for him, the Musketeers and Merlin casts because he finds the fictional aspect quaint, all the physical fighters because he appreciates talents in that area... He's a people person. On a more creepy note, Morgana's soul would be amazing with some marinading. Arthur and Elsa's souls could probably also do in a pinch, but. Morgana. He can daydream, okay.
Do you have any headcanon about Sherlock's childhood/adolescence aside from what we're told in the show?