Well, it's not ethical at all. Fanfiction should generally stay within the boundaries of respect for the source material. When it comes to creating erotic content related to a character, it not only violates the moral code but can also be offensive to the fans who love the character for its original qualities and the story it belongs to. It can also potentially cause issues with the copyright holders of the original work.
There is a fanfic called 'Natsume's Journey'. In this story, it delves deep into Natsume's growth and development. It has detailed descriptions of her relationships with other characters, making it a very immersive read.
Unfortunately, without more research or prior knowledge, it's impossible to tell who the author of 'asahina san no bentou tabetai novel' is. It could be a relatively unknown author or a new release that hasn't gained wide recognition yet.
The name of the female lead in " War of the Brothers " was " Asahina Ayama " and not " Chika." Zhu Li and Liu Sheng called her " Xiao Qian " probably imitating the common way of addressing women in Japanese novels, but this way of addressing was not clearly explained or explained in the novel. If there is any other plot or background that can be provided, I can better answer your question.
You could look for fanfics that focus on the emotional bonds between the characters. For instance, stories about Asahina Masaomi and Ema's sibling - like relationship development, how they support each other through difficult times.
I'm not sure of a specific aoI asahina muscle fanfic off - hand, but you can try looking on fanfic websites. Search for tags related to his name and'muscle' to find relevant stories.
A really interesting aoI asahina muscle fanfic could explore the backstory of how he got interested in building muscles in the first place. It could talk about his early days, the inspiration that led him to start working on his physique, and how he gradually developed his current muscular form over time.
I'm not sure specifically as I haven't read this particular novel. It might be about someone named Asahina-san and their bentou (lunch box) that someone wants to eat. Maybe it's a story centered around food, relationships, and the significance of Asahina - san's bentou in a particular context.
First, study Asahina Natsume's character traits. Observe how she behaves, talks, and reacts in the original work. This will help you create a believable version of her in your fanfic.
One alternative could be creating non - sexual, friendship - based fanfic. For example, stories about Aoi Asahina's adventures with other characters in a more innocent and positive context. Another option is to write character - study fanfic, exploring her personality, dreams, and growth without any sexual elements.