Not question, more like asking for recommendations

So can anyone recommend complexity mangas? I meant storyline and relationships kind of things and if it fits also something with sexual dynamics involve but not just R, I, or Pe cause I don't cross much of that and continue to avoid so. So I state my claim here of wanting to find some mangas, manhwas, or manhuas to read. And also it gotta be so complex like puzzle pieces you can piece together but I guess that's depends on who read it, and it can be ongoing or complete, thanks peeps have a good day.