Genres are typically broad categories like mystery, romance, science - fiction etc. 'Shag pulp fiction' doesn't seem to represent a set of common characteristics that would define a genre. It could be a creative or idiosyncratic term someone made up, but not a genre in the usual sense.
I'm not entirely sure specifically what 'Shag Pulp Fiction' is about as it's not a very common or well - known term. It could potentially be a made - up or very niche concept.
The Hunter x Hunter manga is unfortunately not complete. The author has faced various issues that have led to intermittent breaks and an unresolved storyline.
The Hunter x Hunter manga has indeed concluded. However, the ending might have left some fans wanting more or with mixed feelings depending on their expectations.