Well, smut manga typically features a lot of sexual imagery and scenarios. Regular manga, on the other hand, can be about anything from superheroes to school life and doesn't focus mainly on sexual themes. The main difference is the emphasis on sexuality in smut manga.
One example could be 'Love Hina'. It has a great story about a young man and his relationships with various female characters in a boarding house. There are some romantic and comical situations that border on the more 'smutty' side at times. The character development and the overall plot of the protagonist trying to find his place and love make it engaging.
The plot itself should be engaging. It can't just be a series of sexual scenes. Take 'Nana' for instance. It has a story about two girls named Nana who are on different paths in life. There are some romantic and passionate relationships in it. The overall plot about their friendship, career aspirations, and love lives holds the story together, and the 'smutty' elements are just part of the bigger picture of the characters' lives.
First, create well - developed characters with strong personalities and desires. For example, a brooding hero and a sassy heroine. Then, build sexual tension gradually. Don't rush into the explicit scenes right away. Use descriptive language for the physical and emotional aspects of the relationship. Like, describe how their bodies react to each other's touch. Also, make sure there's a good plot underlying the romance and smut elements.
One popular smut romance novel is 'Fifty Shades of Grey'. It became a global phenomenon with its steamy and controversial relationship between the main characters. Another is 'Bared to You' which also features an intense, passionate relationship with elements of eroticism. 'Beautiful Bastard' is also well - known in this genre for its spicy love - hate relationship.
Some smut romance novels include 'A Court of Thorns and Roses' which has some steamy moments between the main characters. The relationship in the story is complex and the romantic and sexual elements add to the overall allure. 'After' is another one that has become quite well - known. It tells a story of young love that also includes some fairly explicit romantic scenes. And 'Gabriel's Inferno' is a popular choice for those who like smutty romance as it has a very passionate love story.