I'm not sure about the exact plot as I haven't read this novel specifically. But from the title, it seems that the story might be about a woman who is rescued or attracted away from her irresponsible (deadbeat) husband by another person.
The woman in this story is a central figure. She is the one who is in the situation of being with a deadbeat husband and then being drawn away. Her deadbeat husband is also an important character, representing the bad situation she is leaving. And of course, the man who steals her away is another main character. He is the one who brings change to her life. He might be portrayed as a hero - like figure, but we can't be sure without reading the novel.
I'm not sure specifically as there could be many different 'deadbeat noble' light novels. Generally, it might be about a noble who is lazy or irresponsible in some way and the story could revolve around their adventures, misadventures, or their growth and change in character.
I'm not aware of any extremely popular 'deadbeat noble light novels' off the top of my head. There are so many light novels out there that it's hard to keep track of all the different sub - genres and specific titles that might fit this description.
The 'Reformation of a Deadbeat Noble' light novel probably focuses on the journey of this so - called deadbeat noble. It might explore his relationships with other characters, such as his family, friends, or rivals. As he reforms, he may have to face his past mistakes and make amends. There could also be elements of adventure as he tries to prove himself anew in a world that may have had low expectations of him.
One key element could be the transformation of the character of the deadbeat noble. Instead of being lazy and irresponsible, they might start to take on responsibilities. For example, they could begin to manage their family's estates or get involved in community affairs.
It's a story that might focus on the experiences and adventures of a person who is considered a bit of a slacker when it comes to meals or life in general.
I'm not sure specifically as I haven't read it, but it's likely that the deadbeat noble himself is a main character. There may also be a mentor - like figure who helps him in his reformation process, or perhaps a love interest who serves as a motivation for him to change.
Obviously, the deadbeat noble himself is a crucial character. He is the center of the story's transformation. There might also be a mentor - like figure who guides him in his reformation journey.