The specific reference to "Heyzo-1991" likely pertains to a series of videos or a particular production run by Heyzo in 1991.
One theory suggests that the Heyzo series, including Heyzo-1991 Part 1, might be linked to a specific production company or studio, potentially operating on the fringes of mainstream Japanese entertainment. Another hypothesis proposes that the titles may be part of a larger, more complex narrative or thematic project. heyzo heyzo-1991 part1