http://doujinshi.mugimugi.org/book/1639/Hanasan-No-Kyuujitsu/

Because /g/15769/31256f28e6/ is missing pages 45 and 50.

Besides, it looks like /g/15769/31256f28e6/ is a compilation of stories from magazine issues with tankoubon cover, or a different issue of the tankoubon - because some pages, mostly beginning chapters, have different texts in this scan. Compare image 51 for example.

due of the spoilful "Blank Censorship" I will launch a Tag "Blank Censorship" in the name of Hatred!!

Base +10

It's censored like that because technically this is non-h. There is no 18+ warning on the cover, meaning it can be sold to minors in any store.

Base +9, Doutey +9, observer1980 +21