Your last line describes many a yaoi manga, so why single out this one, again?
Also, what Hiroi and Take do to Mine in Strawberry Chocolate Vanilla is violence, not actual sadism, as was the case between Hazuki, Kazanari and Sarasa.
Not so sure what you are trying to point out here. I didn't mean to particularly point out this one manga has a screwed-up plot. As you said many manga have that. Though why should I mention other manga when I am commenting this particular manga?
You makes me quite confused, people have different definitions of sadism, you don't have to "correct" mine with the assumption that you are right.
(=・ω・=) Well finished it out of curiosity, didn't particularly enjoy it in or feel bad about it since I am not interested in sadistic love involving physical violence. But I do see why some people would be into this kind of play and romance. ╮(￣▽￣)╭ The plot is quite straightforward, different people keep getting raped, abused, rescued and raped abused by another person and so on.