I'm not sure specifically as there could be many novels with such a title. It might be about an admiral in the navy who has some dark secrets, perhaps involving power struggles, moral dilemmas, or battles against unseen enemies within the navy.
The main character is obviously the dark admiral in the navy. However, there could be other significant characters as well. There might be a female journalist who is investigating rumors about the admiral's dark deeds. She could be a strong - willed character who is determined to expose the truth. Additionally, there could be a group of comrades of the admiral from his early days in the navy. They might be either trying to save him from his dark path or get caught up in his schemes, which would add more layers to the story.
Dark Arrow was a military novel written by Tie Si. It told the story of a Chinese anti-Japanese armed force during the Anti-Japanese War. The novel was based on real historical events, and through vivid characters and plot narrations, it showed the heroic struggle and strong perseverance of the Chinese anti-Japanese armed forces. The novel mainly tells the story of an anti-Japanese armed force composed of farmers, a part of the 33rd Army of the National Revolutionary Army, fighting a life and death struggle under the heavy encirclement and fierce attack of the Japanese army. In the battle, the soldiers of the protagonist's army bravely killed the enemy and finally successfully eliminated the Japanese agents to protect the interests of the country and the people. The plot of the novel was compact and the characters were vivid, which was highly readable and infectious.
In fanfiction, a dark tunnel might symbolize mystery or a journey into the unknown. The hair tie on the wrist could be a simple accessory with a deeper meaning. It might be a reminder of someone, like a love interest who gave it. For example, in a supernatural fanfic, the dark tunnel could be a portal to another dimension and the hair tie could be a charm that protects the character as they enter it.
Navy blue and navy blue were two dark colors. They differed in color tendency, hue, and lightness. Navy blue was a darker shade of dark blue, while navy blue was a lighter shade of gray. In addition, navy blue was usually darker than navy blue, but it was not very deep, while navy blue was relatively brighter. In terms of visual effects, navy blue was a color tone with rich color variations. It was a neutral color that looked solemn and versatile. The visual effect of navy blue was better. It was more lively and jumping than black, but it was not as light and eye-catching as white. In terms of application scenarios, navy blue and navy blue were suitable for the production of various types of clothing. They could be applied to casual wear, sportswear, formal wear, formal wear, and other occasions. Relatively speaking, navy blue was more suitable for men's wear because it looked more elegant. In general, although navy blue and navy blue were both dark colors, there were still visual differences.
Positive themes could be about their teamwork in naval operations. For example, how navy men and women work together to safeguard the seas, like in rescue missions or in joint military exercises where they rely on each other's skills and expertise.
Perhaps it symbolizes a form of restraint or hidden power. The black hair tie on the wrist is a physical object that can be used to hold things together, like hair. In the context of the fanfiction, it might suggest that the character is holding themselves back or has some latent ability that is 'tied' up. The dark tunnel could be the place where this hidden aspect of the character will be revealed or challenged.
One way is to have the character enter the dark tunnel while fiddling with the hair tie on their wrist out of nervousness. Maybe they find something in the tunnel that makes them realize the importance of the hair tie, like it was a key to unlock a hidden door.
The character could be in the dark tunnel, feeling lost. They look at the black hair tie on their wrist and remember a promise they made. This memory gives them the motivation to keep going and find a way out of the tunnel. For instance, if it was a promise to a friend who is in danger, the hair tie serves as a reminder of their duty.