I'm not sure specifically as I haven't read it in detail. It might be about various adventures, character developments, and a fictional world filled with unique elements.
The main plot involves the protagonist's growth journey in a world full of challenges and powers. He has to face various difficulties and enemies to become stronger.
One of the main themes is growth. The characters constantly grow in strength and maturity throughout the story. Another theme is friendship. The relationships between the characters play a crucial role in their adventures. And there is also the theme of perseverance as they face numerous challenges and keep pushing forward.
You might be able to find it in some specialized bookstores that carry a wide range of light novels. Also, online book retailers could be a good place to look.
Tang San is highly popular. He has a complex personality and his growth arc is really interesting. Xiao Wu is adored by many because of her relationship with Tang San and her own strength. Another popular character is Oscar. His role as a food - based soul master is quite unique and his development throughout the story makes him a fan favorite.
I'm not sure if there is a specific light novel exactly with this combination. There are so many light novels out there, and it might be a very niche or new concept that I haven't come across yet.
Since I don't know of a light novel that specifically combines 'Dalou Dalu 3', 'Wuzhang Kong Spirit' and 'Amour Light', I would suggest looking into light novels with a similar atmosphere. 'Re:Zero − Starting Life in Another World' has complex relationships, a fantastical world, and elements of mystery. It's not the same, but it could be an interesting read for someone interested in the general idea of a story with unique concepts and relationship dynamics.
The significance lies in breaking stereotypes. It showcases that love knows no color boundaries in the cartoon world. It also provides a role model for inclusivity and equality.