One reason could be that Tim discovers something dangerous that a group wants to keep hidden. So they take him away to stop him from revealing it. They could drug him or knock him out and then transport him to a secret location. In this situation, Batman would have to rely on his detective skills to find out where Tim has been taken.
There are also fanfictions where Tim is taken away by mistake. For instance, a new anti - hero in Gotham who doesn't know the full story might think Tim is part of a criminal operation. So they take him into custody. This would then lead to a series of events where Batman has to prove Tim's innocence and get him back.
In some fanfictions where Tim is taken away, it could lead to Batman going on a desperate search. He might enlist the help of other members of the Bat - family like Dick or Damian. They would scour Gotham and beyond, using all their detective skills to find Tim.
In some fanfictions, it could be due to personal growth. Tim Drake might have outgrown the role of Robin or the shadow of Batman. He may want to explore his own identity and capabilities independently, away from the Bat - family. He could feel that staying with Batman is holding him back from reaching his full potential as a hero.
Tim could end up saving Batman in the fanfiction. Despite being younger and less experienced, Tim might notice something that Batman misses during a fight. This would completely change Batman's view of him, and they could start to develop a more equal partnership.
One possible reason could be that he feels misunderstood by his family or friends. Maybe he has some secrets that he's afraid to share, and the fear of being judged makes him run away.
Qian Ye's origin force was taken away because the dynasty knew about Qian Ye's background, causing the Zhao family to plunder Qian Ye's origin force and transfer it to Qian Ye's sister, Zhao Ruoxi. Later, someone rescued Zhao Ruoxi, but it was not a complete success. Qian Ye was abandoned in the garbage dump of the Evernight Continent. The specific reasons and details may need to refer to the original text for more information.
Their relationship can be explored through conflict. For instance, they could be competing for Batman's approval. Damian, being the son of Batman, might feel he has a natural right to be the top protege, while Tim, with his long - standing relationship with Batman, doesn't want to be pushed aside. This creates a tense dynamic that can be developed in a fanfiction.
It could be in a tense confrontation as Tim tries to stop the sea witch's evil plans.
I really like 'Tim Drake: The Lost Days Fanfic'. It fills in the gaps of his past and gives more depth to his backstory. It's a great read for those who want to understand Tim better in the Batman universe.
One possible scenario in this fanfiction could be that Tim Drake initially looks up to Batman from afar. He might be in awe when he finally meets him, perhaps during a crime - fighting situation. Tim could be trying to prove himself to Batman, showing off his detective skills that he has honed over time.
Tim Drake walking away in fanfiction could be a way to explore his character in a different light. It could show his independence. He might be walking away to start his own journey, to figure out who he really is outside of the shadow of the Bat - family. In some fanfictions, this could lead to him developing new skills or making new allies. It gives the writer a chance to take the character in a unique direction, away from the more traditional storylines.