Honestly I am not all that disappointed by the death of 3 of the 6 heroines. With this Ray can more focus on girls that are meant for him and not quests about robbing the protagonist. As aina said, everyone has their own destiny so he can get girls destined for him now. Also I kind of doubt Skye is going to be the last protagonist, there are clearly other worlds, so limiting himself in the first world with the first protagonist is really good(unless we get a worlds colliding kind of thing where after Skye is dealt with the world of another protagonist opens up and fuses with this world).