3.856 out of 5 from 37 votes
Both manga focus at least in part about sexual abuse from a step-father. A you can imagine Zankoku is deffinitly more in depth since it's much longer. Kyoukyuu is a much lighter an more cheerful story. However some who like one might like the other.
Both mangas have a tragic plot and are in all ways mature. Both touch a psychological aspect, so I would not recommend it to someone who cannot handle such disturbing stories/plots.
These mangas concentrate on a boy who is being sexually and just physically abused by elder man.
These are not some plain dry sex yaoi manga.
These manga are about feelings, about pain/angst, loathing, fear and shame.