Yeah, we got beaten to the punch on this story by another group, but we were already in the middle of working on it and we'll finish our version of the "Two Years Later" chapter eventually (it's no longer a top priority, however, so don't expect it soon).
A note on the title: "Utonoto" is most likely derived from Imouto no Tomodachi (いもうとのともだち), which translates to "Sister's Friend".