Well, 'The Beginning After the End' might be a good recommendation. It shares the theme of a character with special abilities and a journey of growth, much like in 'Regressor of the Fallen Family'. There are also elements of strategy and development in both.
I think 'Re:Zero − Starting Life in Another World' has some similarities. The main character in it has to deal with difficult situations and try to change things, just like the 'Regressor of the Fallen Family'. It also has a complex world - building aspect that fans of the latter might enjoy.
A novel named 'Omniscient Reader's Viewpoint' might be relevant. It has a unique premise where the protagonist uses his knowledge from reading a web novel to survive in a world that has become like the novel he read. Just like in 'Regressor of the Fallen Family Raw Novel', the characters have to adapt to strange and difficult situations using their own abilities and knowledge.
Power and growth are also significant themes. The main character has to gain power to change the fate of the fallen family. There's also the theme of facing challenges. He has to deal with various obstacles in his regressed journey, which shows his struggle and the will to overcome difficulties.
Probably family restoration. Since it's about a regressor in a fallen family, trying to bring the family back to its former state would be a main theme.
The main character in the 'Regressor of the Fallen Family' novel is typically the one around whom the story revolves. They are likely to be the one with the regressor ability. This character probably has to face a lot of challenges related to the downfall of their family, like dealing with debts, family feuds, or loss of status, and uses their regressor power to try and turn things around.
Well, 'Overgeared' can be considered in this category too. The protagonist has to face various difficulties as a regressor in a game - like world. He uses his knowledge from the past to grow stronger and overcome obstacles. There are complex character relationships and exciting plot developments in this light novel.
One of the main themes is redemption. The regressor is likely trying to make up for the downfall of their family in the past. Another theme could be power struggle as they might need to gain power to restore their family's status.
One similar light novel could be 'Sword Art Online'. It also has elements of adventure and character growth in a fictional world. Another one might be 'Log Horizon' which shares the concept of being trapped in a game - like world and having to deal with various challenges. There's also 'Overlord' where the main character has a powerful and unique position in a different world.
In the light novel 'Solo Leveling', the protagonist can be considered a kind of 'past life regressor' in a sense. He was once a weak hunter but through his past experiences and growth, he becomes extremely powerful. It's full of action-packed scenes and an interesting world - building.
One similar light novel could be 'Sword Art Online'. It also features a lot of action and adventure in a fictional world. The main character has to face various challenges and battles, much like in 'chivalry of fallen knight light novel'.
😋I recommend the following novels to you: 1. "Love Hours": It described many romantic love stories, which could satisfy your expectations of young love. 2. "To My Master Gu": It was a story about the love between a young girl and a man who looked like an animal with no backbone. It was a representative of youth. 3. "I Just Want to Live Ah": Although it's a light novel, there are many youthful elements. The story describes the protagonist's struggle to survive in a difficult situation. It's enough to stimulate your youthful fighting spirit. I hope you like this fairy's recommendation. Muah ~😗