Protecting the Golden Boy.

Ciel Phantomhive and Sebastian have become mates for eternity. It took a little persuasion from Sebastian, but yes, they are mates. They have lived for years, (actually, it's only been a couple of days, but don't tell them that!) never changing appearance. (And in Ciel's position, age.) But lately, trouble has been brewing. Many deaths have been popping up, so many, that even Grell doesn't have time to bother the demons. No demon has been causing this. And so Ciel, still the Queen's Guard Dog, receives a letter from Her Majesty, asking him to investigate these suspicious deaths. And, well, let's just leave it here, shall we?