Oneeshota fetishist mangaka that goes by the name of Oneesho-sensei... it's too obvious she has an incestuous feeling towards Shinba and projects it on her doujinshis. Now i understand where Shinba's loser energy comes from. His family is a huge bunch of freaks. And deapite of that, Shinba seems to be the most "normal" (yet. Unless his mom or dad gets introduced).
Too bad the dead end to her delusions happens to be Hizumi, who went too far, to the point of nuking Oneeshota's fetishist Oneeshota land with her "haha" missile.
Now, being serious. Shinba once again mentioned Hizumi's bad memories. At this point, seems Hizumi's backstory from before the rundown cinema closedown will be some kind of final arc plot.