勝手にSPARK! [Katte ni Spark!]

A single-issue 1986 comic from Hakusensha, 勝手にSPARK! is a brief, self-contained story that stands as a minor but distinctive entry in the publisher's catalog. Its exact premise and creative team remain obscure, but its existence as a lone, long-running "series" of just one issue makes it a curious artifact of its era.