Bakugo would be a very likely candidate. He and Kirishima are good friends, and Bakugo has a strong sense of loyalty (even if he doesn't always show it in the most obvious way). His powerful quirk and his determination would drive him to go after Kirishima and bring him back.
The rest of Class 1 - A could also be the ones to rescue him. They are a tight - knit group, and they would not stand by while one of their own is in danger. They would pool their different quirks together to form a plan and rescue Kirishima from the kidnappers.
Their manager could be a likely hero. They know the boys well and would be highly motivated to get them back. They probably have connections and resources that could be used to track down the kidnappers and negotiate for their release.
In 'Aria Gets Kidnapped Fanfiction', a group of her classmates could be the ones to rescue her. They might form an impromptu rescue team, pooling their different skills. One could be good at hacking and find the kidnapper's location through digital means, another could be athletic and lead the charge when they reach the kidnapper's lair. Additionally, an unexpected ally, like a character who has always been in the background but has a hidden talent or power, could come forward to rescue Aria. This could add an element of surprise to the story.
The Cullens are the most likely. Edward, with his mind - reading ability, can try to sense where Renesmee is. Bella, with her strong will and vampire strength, would be at the forefront of the rescue mission. And Carlisle, with his wisdom and leadership, would plan the whole operation.
Enemies from her past, such as old villains she's fought against, would be likely kidnappers. They might hold a grudge for her previous defeats and want to use her for revenge or some dark purpose.
Naruto would be a very likely character to be involved in the rescue. He and Gaara have a special bond, and Naruto is always ready to save his friends. Rock Lee might also be involved as he is very loyal to his comrades. And Temari, Gaara's sister, would surely not sit idly by when her brother is kidnapped. She would be one of the first to set out to rescue him.
Harry Potter is the most obvious choice. He has a deep connection with Ginny and would stop at nothing to save her. Ron and Hermione would also be likely candidates. Ron, being Ginny's brother, would be extremely motivated to rescue her. Hermione, with her vast knowledge of magic, would be crucial in coming up with a rescue plan. Neville Longbottom could also be a potential rescuer. He has shown great courage and has a strong sense of loyalty towards his friends. He might step up to the challenge of rescuing Ginny from the Death Eaters.
The Yiga Clan could be likely kidnappers. They've always been enemies of Link and would love to get their hands on him. They might see kidnapping him as a way to stop him from interfering in their plans. Another possibility is the Gerudo thieves. Although not all Gerudo are bad, there could be a group of them who think Link has something valuable and decide to take him hostage.
Damon is very likely to be the one to rescue Elena. He has a deep connection with her and is extremely protective. His vampire abilities, like super speed and strength, make him well - equipped to fight off any threats and get her to safety quickly.
Maybe a secret admirer who is too shy to approach her normally. They think that by kidnapping her, they can have some alone time with her and confess their feelings. However, this is a very extreme and wrong way to go about it. Another possibility is a group of thieves who think Haruhi comes from a wealthy family and they can get a big ransom for her.
It could be a jealous rival host club. They might be envious of the kidnapped host club's success and popularity, so they plan to kidnap them to gain an advantage.