In this fanfiction, it might be that Anakin has a vision of the future where the younglings grow up to be great Jedi and save the galaxy. So, he defies Palpatine's orders. He could enlist the help of some loyal clones or other Jedi who have managed to escape the initial purge. He then takes the younglings to a remote planet where they can be safe and trained in secret.
One common storyline could be Anakin's struggle with his darker side while interacting with the younglings. For example, in some fanfics, Anakin might be forced to protect the younglings from an external threat, which tests his loyalty to the Jedi Order. Another storyline could involve Anakin teaching the younglings, which shows his relationship with the next generation of Jedi. There are also fanfics where the younglings sense Anakin's internal conflict and try to help him, adding an interesting dynamic to the story.
It could be Palpatine. Since Anakin is going against his wishes by saving the younglings, Palpatine would see this as a threat to his plans. He might send more clone troopers or even some of his dark side minions to stop Anakin.
Fanfics often depict Anakin's interaction with younglings as complex. Sometimes he is kind and patient, like a big brother or a mentor. He might teach them lightsaber techniques or how to meditate. But other times, his darker side can peek through. For example, he could get frustrated with their lack of progress, and the readers can see the internal struggle within him as he tries to control his emotions.
It could be a new and powerful dark side user. This character might have emerged from the shadows, having trained in secret, and their sole purpose is to take down Anakin as he is seen as a threat to their plans for galactic domination.
Maybe Anakin is fully consumed by the dark side. The dark side often twists a person's mind, and he might see Obi - Wan's child as a threat to his own power or position. So, in his warped state of mind, he decides to eliminate the child.
The reason why Hideki killed Dylin was because Dylin had rebelled within the family and killed the chief of the family, Sanxing, as well as other important members. Dylin rebelled because the Zi Chuan family did not trust him, and as the commander, he had to quell the rebellion. As the heir of the Zichuan family, Zichuan Ning escaped to the Far East and asked for help from Zichuan Xiu to defeat Dylin and take back the capital. In the end, Hideki attacked Dylin. After an intense battle, Dylin was defeated. Hideki supported Hideki and returned to the Imperial Capital. As for the specific motive and background, the search results did not mention it.
There were two possible reasons Ku He wanted to kill Xiao En. The first possibility was that Xiao En knew Ku He's unspeakable secret. Back then, Ku He was so hungry that he wanted to feed on humans, and Xiao En had witnessed that scene with his own eyes. In order to protect his reputation, Ku He did not want Xiao En to reveal this secret, so he decided to kill Xiao En. The other possibility was that when Xiao En and Ku He were searching for the temple together, Ku He had obtained a martial arts manual from Ye Qingmei, which had allowed him to break through the boundary and become a Great Grandmaster. Ku He was grateful to Ye Qingmei and knelt down to her. If Ye Qingmei had not revealed this secret, Ku He might not have killed Xiao En. However, the specific reason might need to be further watched to understand.
The reason why Destiny killed her clone was to help her brother change his fate. Tianming was the strongest of the four avatars of the protagonist Ye Xuan's sister, Qing 'er. In her previous life, Qing 'er's brother gave her the last steamed bun to eat, and he starved to death. Therefore, the destiny left behind a strong obsession to find his brother and protect him. Tianming was extremely powerful. She could kill people with a single sword strike. In order to help her brother defy the heavens and change fate, she carried out a large number of massacres and even destroyed an entire planet with a single sword strike. However, the other two clones did not agree with her defying the law and thought that she had killed too many people. Thus, Tianming decided to kill these two clones. In short, the reason why Destiny killed the clone was to find her brother and protect him, as well as to help her brother change his fate.
There were two possible reasons Ku He wanted to kill Xiao En. The first possibility was that Xiao En knew Ku He's unspeakable secret. Back then, Ku He was so hungry that he wanted to feed on humans, and Xiao En had witnessed that scene with his own eyes. In order to protect his reputation, Ku He did not want Xiao En to reveal this secret, so he decided to kill Xiao En. The second possibility was that Ku He wanted to keep the temple a secret and didn't want anyone to know about its existence. Xiao En and Ku He had rescued Ye Qingmei together, so Xiao En also knew the secret of the temple. Ku He was worried that Xiao En would reveal the secret of the temple, so he decided to kill Xiao En. These are the possible reasons based on the search results provided. The specific plot and details may require further reading to obtain a more accurate answer.