Congrats on making your very first VN! I had a blast playing Donut Holes!
The pacing was great. Every dialogue felt like flowing flawlessly with zero moments wasted. The smut was well-placed and served as a good conclusion to the story. Everything felt natural.
The art style gives the project a distinct personality. The best part is you managed to use the visual elements to reinforce the storytelling (the truck and the belly!). That's pretty rare to see among all the entries I have read so far. The UI could do some improvement, but the state of the game as it is, is already satisfactory.
Overall it's a good read. 10/10 would date JJ.