Doujinshi

Doujinshi are a Japanese fan creation. Basically, Doujinshis are fan-produced manga published in typical comic book form. They cover genres similar to those found in Western fanfiction. Doujinshis have a special value in Japanese manga culture - a lot of manga artists have started out as doujinshi artists for their favorite manga or TV series before publishing original material.

An example of Japanese Manga Style Shounen-Ai¹ Doujinshi
Circle / Artist : Weekend / Matsuri
Contents:

• Love Comedy story about Sam and Dean
• Serious story about Sam and Dean

1: Shounen-Ai or Shonen-Ai literally means Boys Love, and is a typical mild Yaoi-themed or slash-themed story.

• More scans of the comic
• Online shop for Supernatural doujinshi