Old school smut. While it does feel repetitive at times, I like the manga overall.
I will say one of the girls who used to be prominent in the beginning got the shaft in the later chapters. From what I remember, she just stop appearing for dozens of chapters which is jarring for how much she apparently loves the MC. It's even more noticeable when the author introduced a girl that looks similar to her.
Also, the author decides to give the cheerleader president an anal fetish later on so if you're into that, keep reading on.