Hey Strong, first things first, thank you for putting the effort onto making a free game for everyone, and boy, I finally found a visual novel with a muscle/size difference!
Edit: Sadly, the dialogue doesn't seem very realistic (interactions, intimacy, reactions, dialogue in general), but please don't take this as a mean critique, but more so of a constructive one! After all you're writing a story, a "book", so to say, and we can always enhance our literature skills.