Forum:What is this song's title?

http://www.youtube.com/watch?v=E5fNXU_84EQ&feature=related

I'm a big fan of Luka/Gakupo duets and I found this one on YouTube, but I can't seem to find a match anywhere on Vocaloid Wikia in thhe Luka/Gakupo duets. I checked the song's description and it linked to the original Nicovideo upload. I tried Google translate, but it gave me a really weird title, "Luke Spell Megurine Kamui." Not satisfied, I checked to see who the composer was, and he went by the name of "Hachiro mackerel," aka "SABA.U1."

Does anyone on here know who this guy is, or what the actual title of this song is? I ask because I'd like to cosplay Luka in that kimono at some point, and I can't exactly credit where the outfit came from if I don't even know the song's title, let alone who the heck this guy is. o-o;