Woah, this was awesome, and the idea for more cum equals to more girlier is a great idea.... At the last page though, is it a new girl or is it the other guy with a skinsuit too???
Okay let me explain what's happening a bit here up to the middle part. Page 3-5 the guy basically wants to experience having sex as a girl so he bought the skinsuit while his friend laughed it off. Page 6 after wearing the skinsuit his(her?) friend commented that she still looks like her old self just with boobs and a vagina attached. Page 7-10 MC tried fondling her breasts but felt nothing. Page 11-14 MC decided to suck her friend's dick. page 12 is her friend getting embarassed by a naked girl straddling him. Page 15 After vigorously fellating her friend she commented she didn't also felt anything from it much like her boobs earlier. Page 16-19 She decided jam the D in, but unable to jam it past the head of her friend's dick. She felt the oppression of being penetrated commenting it kinda felt good but nothing more. page 19 she tried to wiggle it some more to no avail. Page 20 She's thinking that the skin might be defective since her vagina was shallow and didn't felt anything. Page 21-22 Her friend forcefully jerked off to her. Page 23 First panel is just her telling him that he's a pervert for jerking off just by seeing her when suddenly her whole body convulsed and transforming to a more womanly body. Page 24-28 Her friend jammed his dick again inside her but still unable to since it is still shallow. She's saying that it still felt nothing. Page 29-30 Is where her inside started twitching and slowly forming the whole vagina part. After that is just her losing to the D. She also started to get embarrassed by having sex and by the end liking his friend too.