Conan is a very resourceful character. He would start by observing his surroundings carefully. If he's in a building, he'd look for exits, vents, or any possible escape routes. He'd also try to communicate with Kaito Kid to gain some insights into his intentions. Conan might pretend to be sick or injured to make Kaito Kid lower his guard. Then, using his knowledge of self - defense and his quick thinking, he would make his move at the most opportune moment. He could also try to use any gadgets he has on him or find something in the kidnapping location to help him escape.
If Kaito Kid kidnapped Conan in a fanfiction, it could lead to a very interesting dynamic. Kaito Kid may have kidnapped Conan thinking he's just an ordinary smart boy. But as he realizes Conan's true capabilities, he might have second thoughts. Conan, on the other hand, would use his detective skills to study Kaito Kid's motives and methods. He could also try to communicate with Kaito Kid, appealing to his sense of justice or curiosity to let him go.
Conan would be extremely determined. He'd immediately start investigating. His first reaction would be to figure out who could have a motive to kidnap Ran. He'd think about any enemies he has made as Shinichi, since they might target Ran to get to him.
I really like the interactions where Kaito Kid teases Conan. It's so much fun to see how Conan gets all flustered but still tries to be in control. For example, when Kaito Kid leaves behind little clues just to mess with Conan's detective skills. Another great interaction is when they actually have to rely on each other in a dangerous situation, like when they are trapped in an old building together.
Rivalry is a very common theme. Kaito Kid and Shinichi are both highly intelligent characters, so their battles of wits are often central to the stories. For example, in many fics, Kaito Kid will plan a heist and Shinichi will try to stop him, creating a tense and exciting dynamic.
One great plot idea could be a team - up. Kaito Kid gets framed for a crime he didn't commit, and Conan has to help him clear his name while also trying to catch him in his thieving acts. Another could be a time - travel plot where they both end up in the past and have to work together to get back to their own time. Maybe they discover a common enemy from the past that is causing problems in the present as well.
If it's a well - written fanfiction, there could be some unexpected twists. Maybe the kidnapper is someone Ran knows, like an old acquaintance with a grudge. Or perhaps there are multiple kidnappers with different goals. Conan would not only have to deal with finding Ran but also with any traps or false leads set by the kidnappers. And Ran, being a strong - willed character, might try to escape on her own, leaving behind some clues for Conan to find.
One great piece of fanfiction could be 'The Heist and the Detective's Dilemma'. In this fic, Kaito Kid's elaborate heists start to involve Shinichi in unexpected ways, leading to a thrilling cat - and - mouse chase filled with mystery and some great character interactions.
The rivalry between them. Conan is a detective and Kaito Kid is a thief. Their constant cat - and - mouse game makes for exciting stories. Each is trying to outwit the other.
Perhaps Kaito Kid kidnaps a fan by mistake. He was aiming for someone else who looked similar, and this fan is just an ordinary person who happened to be in the wrong place at the wrong time. The fan could be really scared at first, but then as they interact with Kaito Kid, they start to see a different side of him. Kaito Kid might then have to figure out how to let the fan go without getting caught himself.
A young journalist who has been writing articles about Kaito Kid and his heists. Kaito Kid kidnaps the journalist to control the narrative. He wants to make sure that the journalist doesn't publish any more information that could give away his next moves or expose his secrets.