[s]This artist tag has been badly mangled. At least two, possibly three different artist have been mixed up. Currently working to clean up. DO NOT USE[/s]
[s]EDIT: Correction, one artist who draws Hetero and Yaoi under different names; see Ninomotonino.[/s]
EDIT^2: Of the works previously tagged ninomoto, a little more than two-thirds were clearly attributable to Ninomotonino. The remaining are attributable to a defunct Pixiv account at http://www.pixiv.net/member.php?id=142182 (name: 2nohito) and a defunct website at http://www.ninomiy.com. I found evidence to link the pixiv account to the web site, but none to link either to Ninomotonino beyond the similarity in names. For the time being, these posts are tagged under Ninomotonino, however, the possibility remains that all images are due to the same artist.