What is "shinshokan"

is a Japanese publishing company. It was established on June 14, 1961. In April 2009, the US publisher Digital Manga Publishing announced a co-branding operation with Shinshokan, to license yaoi and shōjo manga from Shinshokan's Wings, Dear and Dear+ anthologies under the DokiDoki imprint (the name being Japanese onomatopoeia for a heartbeat).