I think this mangas biggest issue is the flow of events from one to another are so swift you dont even notice that its focusing on a new scene with new people right away.
The male MC that avoids the approach of a woman with the "only with someone you love" thought process needs to die out. That troupe is the second biggest lazy crutch in ecchi stories with dense MC still being number 1.
@darknessblade here are some examples that I also happen to follow (sometimes I don't even know why). These range from strict Onee x Shota to all sorts of variations on the theme of older lady x younger man. I make no promises regarding quality or whether or not you will like them. They are as follows: