(c87) [muchakai (mucha)] Chizuru-chan Kaihatsu ... ✓

Given the title's format and content, it seems to relate to a doujinshi (a self-published work, often manga or a booklet, produced by an amateur creator or a small group of creators, primarily in Japan). The "(C87)" likely refers to Comiket 87, a major doujinshi market held biannually in Tokyo, Japan. Comiket is a significant event for creators to distribute their doujinshi works and for fans to discover new content.

"Chizuru-chan Kaihatsu" translates from Japanese as "Chizuru-chan Development" or something similar, depending on the context. The full title might suggest a story or theme involving the development or growth of a character named Chizuru-chan. (C87) [Muchakai (Mucha)] Chizuru-chan Kaihatsu ...

The "[Muchakai (Mucha)]" part seems to indicate the creator or circle (a group of creators) behind the work. Muchakai or Mucha could be the name of the creator or their circle. Given the title's format and content, it seems