Board Thread:Poll Archive/@comment-24095889-20140415141927/@comment-30602727-20140419033948

186.14.249.235 wrote: they're two sides of the same mirrow, they're not parents, PLEASE PEOPLE READ D -:

rin= right

len= left

kagami: in japanese means mirror

Rin & Len Kagami(ne) :V! ....... we already know this. People of the wiki already know this as this is basic information of VOCALOID.

Of course, most YouTube fans don't know that