You should check out 'Killing Stalking'. It's intense and has a unique story. But be warned, it's quite dark. Another one is 'Semantic Error', which is sweet and charming.
Such a manhwa often explores deep emotional connections and provides a fresh perspective on relationships. The art style might also be very appealing, drawing you in.
One characteristic is the beautiful art style. Manhwa often has very detailed and aesthetically pleasing illustrations that enhance the romantic mood. For example, the way the characters' eyes are drawn can convey a lot of emotions. Another is the variety of themes. They can range from high school romances like in 'True Beauty' to more fantastical ones like in 'Orange Marmalade' where there are vampires.
Romance manhwa novels often have beautiful art styles. The characters are usually drawn in an aesthetically pleasing way, which enhances the romantic atmosphere. For example, the detailed expressions of the characters can show their love, shyness, or longing vividly.
Well, a common feature of a typical romance manhwa is the focus on the emotional journey of the couple. There's usually lots of cute moments, maybe some obstacles they have to overcome together to strengthen their bond. Also, the art style tends to be very appealing, making the characters look charming and the settings dreamy.
I think the ideal protagonist for a manhwa romance could be someone who is brave in facing challenges and shows unwavering loyalty in love. They should have a unique background or story that adds depth to their character and makes the romance more compelling.