Source!
http://www.nytimes.com/best-sellers-books/2015-03-29/manga/list.html
On March 29th the Manga my persona "Mero" comes from topped the charts. Wow just wow, it's really awesome and has never been done before.
Read it here, it's an ecchi so it's not NSFW. http://www.mangahere.co/manga/monster_musume_no_iru_nichijou/