He might become more submissive at first. Having to be led around on a leash is a very humbling experience for someone as proud as Draco. But as the story progresses, he could develop a sense of rebellion against this forced situation.
You can try looking on fanfiction websites like FanFiction.net or Archive of Our Own. They have a wide variety of fanfictions, and you might be able to find some with the 'led draco leash' theme by using the search bar and typing in relevant keywords.
One great 'led draco leash' fanfiction could be a story where Draco is on an adventure and the leash is a magical object that helps him control a special creature. Maybe it has the power to tame a dragon that he discovers in a hidden forest.
This is a rather unusual concept. One possible story could be in a role - playing scenario within a marriage where the couple is exploring new ways of expressing trust and control in a consensual and non - harmful way. For example, in a private, domestic setting, they might use this as a form of unique communication and bonding, where the 'leash' is more of a symbolic tool.
It could be Hermione. Given her strong - willed nature and her often - clashing relationship with Draco, she might be the one to put him in such a situation. Maybe she discovers a new spell or magic item that allows her to do this as a way to keep Draco in line during a particularly tense time at Hogwarts, like when there are threats from dark forces and she doesn't trust Draco not to side with the wrong people.
One possible plot could be that in an alternate universe where wizarding traditions are very different, Draco has committed some minor offense in Hogwarts. As a form of punishment, he is made to be led around by a leash by the protagonist, who could be a Gryffindor student. This would lead to a lot of power - play and interesting character dynamics as Draco, who is used to being in a position of privilege, has to endure this humiliation. Along the way, they might start to understand each other better and form an unlikely friendship.
One idea could be a story where Draco has lost his memory and the character leading him around on a leash is actually trying to protect him from the dark forces that are after him. They use the leash as a way to keep him close in this dangerous situation.
One possible fanfiction could be about a magical creature Draco that is tamed and put on a leash by a powerful wizard. The wizard might be using Draco for some sort of mission, like exploring a dangerous enchanted forest. Draco could be a dragon - like creature with its own will, and throughout the story, it struggles against the leash both physically and emotionally as it tries to assert its independence.
Draco and a harness leash could be part of a story where he's in a magical circus. He's in charge of some magical animals and the harness leash is what keeps them in line. But Draco might start to have second thoughts about keeping these animals in captivity, and the harness leash becomes a symbol of his internal struggle between duty and compassion.
One possible fanfiction could be about Draco using a harness leash in a magical creature training scenario. Maybe he's trying to tame a rare and unruly beast, and the harness leash is a special magical tool. He has to use his Slytherin cunning to figure out how to work with the creature while using the leash effectively.