Talk:Otona na no yo! / 1oku 3zenman Sou Diet Oukoku/@comment-2152025-20140208054137/@comment-131168-20140209184754

Sanzenman is definitely proper over sansenman, but it's easy to see how people started writing 3-senman, only romanizing the kanji part rather than taking it as a whole. I'm sure a ton just read it as "three senman" or "three zenman" anyway, though.