Often, light novels in the Japanese market touch on cultural themes as well. This might include concepts like respect for elders, which could be related to the 'onii chan' in the title. Additionally, if there are any magical or supernatural elements in the story, themes of good versus evil or the balance of power in such a world could be present.
Well, 'Konosuba' is also a great light novel. It's a comical take on the isekai genre. The characters are all misfits and their adventures in the new world are full of hilarity. These light novels, although different from the one you mentioned, might be something you'd enjoy if you like the general idea of light novels.
Since I don't have much information about this 'Takamine - san' light novel with 'haite kudasai', here's a general tip for finding light novels. You can use search engines and type in keywords like 'Takamine - san light novel' and see what comes up. Also, consider following light novel reviewers on social media platforms as they might be aware of such works.
You can try looking for it on popular e - book platforms like Amazon Kindle or Barnes & Noble Nook. They usually have a wide selection of light novels.
Since I'm not familiar with that particular light novel, it's hard to give an exact similar one. However, if it's a slice - of - life or romantic light novel, you might like 'Toradora!'. It has a great story about relationships and character development. Another option could be 'Kaguya - sama: Love is War' which is also about the relationship between two main characters in a unique and comical way.
Water margin is one of the most popular ancient Chinese novels, but it is not a generally accepted martial arts novel. There might be some reasons for this ranking:
The plot of Water Margins is more complicated, including politics, military, Jianghu and many other aspects of content. Wuxia novels usually pay more attention to the compact and simple plot and the description of the battle scene.
There are many characters in Water Margins and their personalities are distinct, but most of the characters are relatively weak. Moreover, the battle scenes in the novel are relatively dull and lack of real martial arts descriptions.
The main theme of Water Margins was to resist the ruling class and oppression, while the theme of Wuxia novels was usually to pursue martial arts and strength and to show the grudges of people in Jianghu.
Therefore, although Water Margins is an excellent novel, it is not a typical martial arts novel. The ranking of the top ten martial arts novels may be based on different standards and preferences.
Xia Qixi is a fictional author whose works are not widely circulated, so I don't have all of her novels. However, if you need to find the works of other authors, you can search through the search engine.