So where does it fail? Well with the second last chapter... Everything fails terrible in there. It is so fucked up that I wonder if the author was still the same or if he didn't want to sabotage his own work for no reason...
Throughout the whole manga, everything follows the same path which is perfectly fine (if you don't expect anything but just your average romance comedy manga). But no... For the second last chapter, how about reading some intense rape scene that goes way too far (there is no penetration, but you can still get your dose of licks and stuff). What the heck happened... This is completely unrelated to Gal Cleaning... as if the author wanted to try out his Hentai skills before becoming a Hentai author. It could be a 7 or even 8. But no, it will stay at 5.
