The vibes it gave has similarities like baddass characters, strong male lead, fighting moments and crimes-story. Even the path is different ( H3-trapped is more police-mafia lovestory & Jack & Joker is more debt collector - pro stealer lovestory ) but still they gave mafia vibes with enemy to lovers plot
This was the first BL drama I watched and really liked a few years ago. I know KeiXYaku is not romance genre like trapped and focus almost completely on investigation part but the similarity between Police and Gangster working behind the back for the mysterious death of someone’s close to them is undeniable.