I wish to find something which has the male lead who is dense to feelings of the other girls, especially love. But he shouldn't be like the dense as gemeric harem person but rather something that made him like that, like a past tragedy, trauma, or he was bullied by girls or he never got along with them. He is in a not really good with girls but he is a normal person.

Something which is nice and has a good plot.

Is there someone with something like this? I really need it. Doesn't matter if it's a manga or ln or wn.

Pashiri na Boku to Koi suru Banchou-san might fit the bill, or as close as I have seen so far. It's more that he doesn't realize the feelings of one particular girl, though.