@vipguy64 Just to play devil's advocate for a minute… how are you sure those other groups are translating from your version instead of directly from Japanese? I mean statistically it sounds correct enough, but have you found proof positive?
After reading some of the chapters' comments, I see people want Tsukushi's injury to have been an accident after all.
On the one hand, I of course want all the Onee-sans to be innocent, so we have no reason to dislike any of them.
On the other hand, the possibility of an accident was examined...