: This likely refers to Comiket 78, a significant event in the doujinshi (indie manga) and doujin (indie music) communities held biannually in Tokyo, Japan. Comiket events are crucial for creators to distribute their self-published works and for fans to discover new and often avant-garde content.

As this is a legacy release from 2010, finding physical copies often requires checking Japanese second-hand retailers or international hobby sites: