This is the fourth part of the series, the other girls shown appear in the previous parts. By the way: In my opinion she was able to surpass her rival at the end of the story as she acknowledged her partner's devotion to her and rewarded him for it by letting him keep his balls. If I recall correctly her rival crushed the balls (or one ball) of her own servant...
I feel like I read Girls Form more just to find out what'll happen rather than to get off, or anything like that.
Well...It had a nice ending. From the way things were going, it seemed like she was somewhat dependant on him to a certain extent and him running away seemed to affect her a lot. I mean, considering the magazine it wasn't exactly going to go anywhere, but her not absolutely obliterating his balls as well as saying he's her 'partner' at the end was quite a nice sight.