Uke doesn't have to be muscular but has to look like a man, not feminine and petite or too soft. Seme doesn't hv to be muscular either but should be taller than the uke. I like it when they're close to or as same age. Love it when they have good communication skills and respect each other as a man. I also like the introverted uke and extroverted seme. Semantic error, pizza delivery guy and the golden palace are good examples of my ideal trope
Good art, that's unique, easily recognizable, and fits the story is the number one most important thing for me. Next to that, I like characters that aren't annoying, whiny, or overly feminine (unless their femininity is interesting/relevant to the plot somehow). I like either really chill/realistic stories with elements of comedy, or something really heavy with psychological elements. I don't mind fluff, but it's generally not something I actively look for. 19 Days is by far the best BL for me. I love every aspect of it, and it encapsulates everything I like to see in not just BL, but manga/manhwa/manhua in general.
Ideal trope, what seme/uke look like, what they're personalities are, setting, anything. What is the perfect bl for u?