BL manhwa refers to Boys' Love comics or graphic novels that come from South Korea and feature romantic or intimate relationships between male characters.
In many spicy BL novels, the language used can be quite evocative. The authors use words to paint a vivid picture of the characters' feelings and the chemistry between them. They might describe the flushed cheeks, the rapid heartbeat when the characters are close to each other. Also, the settings can add to the spiciness. For instance, a secluded beach or a small, cozy apartment where the characters can be alone and let their feelings run wild.
Often, a spicy manhwa novel has characters with strong and distinct personalities. When these characters interact, especially in a romantic or conflict - based context, it creates that 'spicy' feeling. For instance, if you have a headstrong female lead and a brooding male lead, their clashes and growing attraction can make the story spicy. Also, unexpected plot twists in relationships, like a sudden revelation of a past connection or a secret love, can add to the spiciness.
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 popular spicy BL novel is 'KinnPorsche'. It has a passionate relationship between the two main characters, with a lot of intense moments and a complex plot that involves mafia elements.