日本漫画 is the original story created 由 an 作者 and/or artist, like Tite Kubo for Bleach. Doujnshi is done 由 various authors an artists on the same story 或者 characters only its their own stories with no affiliation with the original owner 或者 作者 of the 说 story, umm...its basically 粉丝 fiction :)
