“Fella Pure” is about the student council president Keiko Mitarai, who has a pronounced oral fetish. Her brother Noboru, in particular, has to “suffer” from this fetish when she can’t stand it any longer. However, it soon becomes clear that this is no longer enough for her, and so, it turns more and more unbridled…

Now that the two are having real sex, they can’t keep away from each other, even when it gets “dirty”. When their mother comes home for a short visit, a “glory hole” is improvised without further ado.