BL manhwa refers to Boys' Love comics or graphic novels that come from South Korea and feature romantic or intimate relationships between male characters.
It would be quite an interesting experience. You'd be part of a unique fictional world. You might witness the main characters' love stories unfold from the sidelines. There would be a lot of new rules and social hierarchies to understand, like the omega - alpha - beta dynamics. And you'd probably get to see some really cool and different settings that are typical of the omegaverse.
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.
One should first understand the rules of the omegaverse. Know the different roles and their characteristics. Stay out of the main characters' way most of the time. Blend in with the background and just observe. Also, make friends with other extras for support.
To survive as a villain in a BL manhwa, you have to be strategic. Understand the weaknesses of the heroes and exploit them. Also, build alliances when it suits you, but be ready to betray them if necessary.