Any good harem novel where the focus is on their relationships? it is not like he is paired with every other girl but there is really something between them. and it is not like the boy is an airhead and op and as such all girls fall for him. does not include wuxia, xuanhan, cultivation genre
I recently started reading https://www.novelupdates.com/series/problematic-sister-fell-in-love-with-me/ which should fit your description. I cannot say how good it will be in the later chapters, but so far so good. (ch22)
An asian work so far I have nothing, but if its a western one I can recommend you Celestin Chronicles by Cebelius, Daniel Black series by E William Brown or the Gold, Girls and Glory series by Hondo Jinx.