The special scenes are right before Ange's final scene. Though you shouldn't be on the NTR route to get the spicials.Yes, comrade commissar, this post here.
Also, what does the new update add? I played it through again and it still ended with Angel (I believe?) taking the MC's pills.
Hope they don't have an effect on her, I hate being forced to share powers in these games unless it's a direct antagonist to take down.