BL manhwa refers to Boys' Love comics or graphic novels that come from South Korea and feature romantic or intimate relationships between male characters.
Since I don't know much about 'profundis manhwa novel', it's hard to give an exact match. However, if it has a dark or mysterious theme, 'Bastard' could be something to look into. It has a really gripping and somewhat disturbing plot that keeps readers on their toes. There are also manhwas like 'UnOrdinary' which deals with power dynamics and has a large following.
Well, a rut bl manhwa usually features male-male romantic relationships and explores various themes related to love and emotions. It's a popular genre in the world of manga.
Explicit BL manhwa often features intense romantic and sexual scenes. The art style might be more detailed and bold in depicting emotions and physical interactions.