This does feel a bit odd, like its based on women's football from the 1970's. The girl should be fitter not 'chunky', to play in women's football. Women's footballers are professional athletes. I get that its university / college level but the coach says "welcome to the professional life" so its professional level football and the idea is to train her in a short amount of time but it seems unrealistic. The focus should be more on football and teamwork to get her ready and less on fitness to play in matches or she used to play football but is now out of shape / had an injury (ACL?). I don't think its plausible to be both in such a short amount of time to train her. Big boobs also make it a lot harder to run so you don't really see players with them. Yes, I know its a porn VN but it just seems odd and there's nothing wrong with smaller boobs, especially in this context. Glasses? I have only seen one pro footballer train / play in glasses (Edgar Davids and he wore special ones; none breakable, flush to the face, like pro-cycling glasses) all the others wear contacts or get Lasik. Glasses are dangerous to everyone on the pitch for eye / facial injuries when heading or tackling, even in training.
Where are the women? Most of the coaches and staff are female in women's football these days so why is the MC male chosen randomly by an old guy, over the phone, on the recommendation of another guy? What is the reason they have chosen a guy? Why are they choosing coaches? Everyone has to be interviewed or checked out with background checks by HR these days even at University / college level, even interns. Having a male coach causes a lot more problems in the dressing room / massage room / treatment room / toilets, showers etc in women's football. I think if you explain why the MC is male in a women's environment in the story that would help. Such as is he a specialist in some type of training methods / modern sports science / injury specialist? Alternatively it would make more sense with a female MC and the focus is lesbian (a huge number of women players are in relationships with other teammates / women's coaches in the professional game) with the scenario you are suggesting which I haven't seen before in a women's football VN or if it's men's football and the focus is gay but with it being a guy in women's football, I think it needs explaining more. A trans footballer in the women's game with a male coach could also be on topic for 2025 and very now.
Also having an MC ogling women in the gym while talking to his mate doesn't seem a great fit to work in women's sport. Even his mate says "stop eyeing that girl like a perv". I think he would probably fail the interview or get kicked out straight away as bizarrely women do notice these things and complain. In addition, women's football has modern facilities even at University/College level not just grass in a park with a couple of goals and a bench. The team are recent champions, so are the poor facilities part of the story or just an oversight as its a demo to save time?
I know this is just a sample to show what is intended but the dialogue is basic and a bit clunky and the visuals poor. This is a tough subject to get right in a VN. 99% of football VN's are poor as football is about constant movement in matches or training which is hard to translate into this or any novel format so off the field is usually more important to focus on. Usually, most VN's for in match scenes just resort to one special player doing overhead kicks (very rare), flicks or tricks to win every game which never happens in professional football as it pisses other players off rather than teamwork, passing and movement which does. I'm hoping the focus is the latter.
I didn't leave a review as its so short / a demo at the moment. I wish the dev luck and hope you don't feel this is too critical, you continue and we see the end result.