While the characters and story are quite common and somebody will say the sex scenes are bad, for me this manga is a good treat.
Art: best selling-point, you will rarely see art this good in hentai genre manga.
Character and story: quite common like I said but that does not mean they are bad. They suit each other well but can be boring.
Enjoyment: it's personally feeling. May be you will not feel like the way I feel.
Overal: Recommend reading in your free time. Not your average boderline-hentai manga.
Warning: don't expect all are vanilla sex. Continue with your own risk.
https://mangakitsune.com/manga/nyotaika-yankee-gakuen-ore-no-hajimete-nerawaretemasu/