Takes place when Ciel and Sebastian confront Grell and Madame Red.
For Ivy.
When Ciel had first called out to him, Sebastian had decided to form a contract with the boy because of his beautiful soul. Upon serving his young master as Ciel went about his duties as the Queen's Watchdog, Sebastian discovered that his young master was both headstrong and independent, with a penchant for acting on his own if Sebastian was occupied with orders - and sometimes succeeding, which irked and pleased Sebastian - but mostly getting captured and/or held hostage, and then shamelessly expecting Sebastian to rescue him immediately.
Sebastian had also discovered - much to his displeasure - Ciel's childish side, a facet of Ciel's personality that most believed to have been abolished by hardship. Sebastian could most definitely attest that this was not the case.
There was the afternoon, for example, in which Ciel had ordered his butler to prepare a dinner for the visiting dignitaries, clean the entire manse, inspect the demesnes to see that their presentation was satisfactory, keep the servants from ruining everything, and attend to the shifty figures lurking at the edges of the mansion grounds. You know, the ones with the guns. Oh yes, and the guests will arrive within two hours. I didn't mention them coming yesterday? Must have slipped my mind.
After the testing of Sebastian's abilities had ceased, Sebastian was certain that Ciel only kept up the absurd orders to entertain himself. The I'm-not-going-to-bother-hiding-it smirk Ciel wore had nothing to do with this conclusion.
And then there was a very frail side to Ciel, a side glimpsed rarely by Sebastian and never by anyone else, a side as fragile as badly-blown glass and as alluring to Sebastian as Ciel's own soul.
Sebastian is simultaneously intrigued and filled with wonder at this small boy who is possessed of a vindictive rage that many adults could not sustain, who fearlessly annoys and bares his vulnerable side to a demon (because Sebastian is first and foremost a hungry demon and Ciel doing this is equivalent to someone poking a starved tiger with a stick).
Sebastian also wonders what kind of human could make a demon blush.
Ciel is practically in his lap - IS in his lap - arms lapped loosely but possessively around Sebastian's neck and a smile that is anything but coy on his face as he languidly regards Grell Sutcliffe.
"I regret to inform you that you will not be doing anything with my butler. Sebasian belongs to me and only me."
Sebastian was quite caught off guard when his young master beckoned him down to his level then gave him a shove that pushed him off balance. The result was him half-lying, half-sitting on cold, damp flagstones and a momentary flare of exasperation that had barely been felt before it had been swept away by the sensation of his young master clambering on top of him, all thin limbs and hot thighs and pointed knees and bare, smooth calves that Sebastian could feel through the material of his clothes. He is now torn between the distracting warmth of Ciel straddling his midriff and the look coming from Madame Red that is the first thing in centuries that has caused Sebastian to feel something approaching trepidation.
"The only indecent things Sebastian shall be doing are the ones ordered by me."
He will, Sebastian thinks, hands rising to pull Ciel closer in preparation for an evasive leap, get his master out of the way of that death scythe, since Grell is staring at Ciel in a way that bodes ill for his precious master, and then Sebastian is going to run like hell with Ciel in his arms, because as far as Madame Red is concerned, Sebastian is debauching her beloved nephew and will not give Sebastian the time needed to explain that, actually, it is the other way round.