So, doujinshi are rather common in Japan. However, it seems that doujinshi, especially ones that are derivative works of an existing series, usually only appear in limited non-commercial circulation, such as at doujinshi conventions, in doujin shops, or on art sites like Pixiv.
But sometimes, there are official doujinshi anthologies that seem to be officially endorsed by the publisher, and are published commercially alongside the source material?
These anthology volumes are typically collections of non-canon oneshots from various third-party manga artists. These stories are basically the same kind of stories that you'd find at a doujinshi convention; the only difference is, these stories are being officially published, so I guess they're not technically doujinshi, although they do feel very similar in spirit...
Some examples that I know of:
- Lucky Star: Comic à la Carte
- Haruhi Comic Anthology
- K-On! Anthology Comic
- Puella Magi Madoka Magica: Anthology Comic
- Kagerou Daze Official Anthology Comic (including Upper, Downer, Summer, Winter, Spring, Bitter, Sweet, Spicy, Fantasy, etc.)
Pop Team EpicHoshiiro Girldrop Comic Anthology
- Slow Start Anthology Comic
- Citrus Comic Anthology
- It looks like Bloom Into You is getting an anthology too...
So my question is, what is exactly the process for the creation of an official comic anthology?
For example, how does the publisher decide whether to create one or not? Why do some series have official anthologies while others don't? Is the original creator involved? How do they decide who will be included in the anthology and who won't? Do they just call up various manga artists directly, asking if they want to contribute a chapter to the anthology, or do they put up a notice somewhere?
Just something that I've been wondering about.