Board Thread:Boruto: Naruto the Movie/@comment-27608141-20160217002823/@comment-27142977-20160217151628

I would think since Orochimaru has had a woman in his experiments (Living Corpse Reincarnation), it could be presumed that his dna was mixed with a woman's, thus leading to Mitsuki's birth at some point. Only a speculation, I'm probably wrong though.