My heart swoons when I look at this picture; everyone looks fabulous.

WHO'S GETTING MARRIED TO WHO HERE!!?!? I mean, there are only two boys.....And Len looks good enough to Marry Rin. ;)

My guess:

• Kaito/Meiko - They are both first-gen Vocaloids)
• Miku/Luka
• Len/Rin - This is strange/wrong regardless if you go by canon/official info (Len & Rin being, "two side of the same coin," or mirrors of each other - their last name, "Kagamine," means "Mirror Sound") or typical fanon (they're twin siblings) ^_^;

Let me fix that for you:

StahnAileron said:

• Tensa/Luka

And then this is the anniversary image~ Well it doesn't hurt at all getting married every year to the same girl(s)~

Well, you're not in the image. I was just going by the VISIBLE options as given in the image ^_~