He may also try to reason with Magnus or the kidnappers. Alec is a smart guy, so he might try to find a way to get out of the situation through dialogue. He could point out the negative impacts of their actions on everyone involved.
One common way could be through using his magic in a subtle way. For example, he might use magic to create situations where Alec has no choice but to follow his lead. Maybe he makes it seem like the only option for Alec to protect his friends or family is to do what Magnus wants.
Perhaps Alec's friends and family would launch a rescue mission. They could be very determined to get him back, and in the process, there could be a big showdown between Magnus' fans who support the kidnapping and those who oppose it. It could also lead to a deeper exploration of Magnus' character, like whether he has some dark side that allows this to happen or if it was just a momentary lapse of judgment.
It's also possible that the real antagonist is Alec's own insecurities. Magnus might be using Alec's insecurities to manipulate him. So in a way, Alec's internal struggles could be seen as the antagonist. But again, from the title's perspective, Magnus is the one directly involved in the act of manipulation.
One characteristic is the focus on the relationship between Alec and Magnus. It could be their romantic relationship, like in many fanfics where their love story is explored in great detail. Another is the exploration of their individual personalities. For instance, Alec's loyalty and Magnus's magic are often highlighted.
Through the adoption, they might face external challenges like discrimination from certain parts of the Shadowhunter world. This would make them rely on each other more. They could have late - night talks about how to protect the child and in the process, they would share their fears and hopes for the future. This would strengthen their emotional connection and make their relationship more mature. Also, seeing each other as parents could add a new layer of respect and admiration for one another.
Some fanfics might show Alec being very stoic at first, hiding his pain. He's used to bottling up his emotions as a shadowhunter. But later, he might break down in private. For Magnus, he could be more openly heartbroken, showing his emotions through his magic, like making the room around him dark and stormy.
Alec is likely a character in the fanfic, perhaps someone who is vulnerable to manipulation. Magus is the one who does the manipulating. Without more context from the fanfic, it's hard to say more about their specific identities or backstories.
Love is a very common theme. Their relationship, which is between a Shadowhunter and a warlock, is full of challenges and the fanfics often explore how they overcome these through love. Another theme is acceptance. Alec has to accept Magnus's different lifestyle as a warlock, and Magnus has to accept Alec's duties as a Shadowhunter.
Another plotline might be that in a world where the laws of nature are different for certain characters, Magnus and Alec decide to have a child in this unique way. The story could then focus on how they deal with the reactions of their friends and family, and also the challenges of Alec's pregnancy, like his changing body and emotions. It could also involve them preparing for the arrival of the baby, from choosing a name to setting up a nursery.
There might be some. Some fanfiction authors might explore the concept in a more platonic or magically - unique way that doesn't involve adult themes. You could start by looking on fanfiction platforms and filtering for the appropriate ratings and tags to find such family - friendly versions.