Just played through to the end of Ch. 5, mainly on the strength of the reviews here.
It's not a 5-star game for me, although there is much to praise. I will say that I will be looking out for updates and will continue to play it.
Pros:
- Good models, with physical characteristics that fit their personalities, and expressions that are good at conveying internal emotional states. So technically 5/5.
- While the "young man finds he has magical powers then has lots of sex" theme is not
entirely new around here

the basic plot does seem to have been thought out in advance and is reasonably coherent in execution. I can't emphasise enough that the key to a good VN is the story. You have to retain the player's interest and make them want to find out what happens next. If it were just about the sex scenes, everyone would just watch porn.
cons:
- Only a 3/5 for English expression, unfortunately. Not just spelling errors but words and phrases used wrongly. Nothing destroys immersion like those sorts of mistakes. It is sad to see so much hard work undermined by this sort of failure in execution and I strongly recommend that the writer seeks the assistance of a literate native speaker of English to edit the text.
- The narrative is a bit slow to develop. Pacing is obviously a hard thing to get right, but when the player finds themselves just clicking quickly through yet another sex scene that adds nothing to the plot, then it is going too slowly. Particularly when the "porn shoot" premise is inherently implausible; it would matter less if it did not take up so much time.
But congratulations on the technical accomplishment and I hope the writer finds these comments helpful.
Edit after playing the final update: still a 4/5, but I am sufficiently impressed that I have supported the author on Patreon, What stops this from being one of the all-time greats remains the poor English expression. I believe that I have installed the version with a grammar patch but it still suffers from grammatical mistakes and words used incorrectly.