One popular plot is Sonic and Tails going on an adventure to save their world from a new, powerful villain. They face many challenges together, relying on each other's unique skills. For example, Sonic's speed and Tails' intelligence are combined to solve puzzles and defeat enemies.
There might be a fanfiction where Tails and Sonic time - travel. They could end up in a different era in the Sonic universe and have to find their way back while also dealing with the problems of that time period. For example, they might have to face an ancient evil that was thought to be long gone.
In this fanfiction, perhaps Sonic Underground is facing a threat that they can't handle alone. Tails, being a friend of Sonic from another part of their world, comes to their aid. They discover that an ancient evil has been awakened. The story could involve Tails using his inventions to analyze the ancient evil's weaknesses while Sonic and his siblings use their unique abilities to keep the evil at bay. As they progress, they form a strong bond and learn from each other's ways of doing things.
I'm not sure about its popularity. It depends on the fan community. Some might find the dark and edgy concept interesting, while others might not like the idea of Tails being killed off in a fan - made story.
They might go on an adventure. Maybe they'll discover a hidden treasure or face a new enemy together.
In the fanfiction, when Sonic meets Tails in the snow, they could also just have a friendly chat. They might talk about their past adventures, like the time they saved the world from Dr. Eggman. Tails could share some new inventions he's been working on, and Sonic would be excited to hear about them. They might also plan their next adventure while enjoying the snowy scenery.
It could be a new villain created just for this fanfiction. Maybe a powerful wizard who wants to use the combined powers of Sonic Underground and Tails for his own dark magic. He sees their unique abilities as a way to gain ultimate power and they have to fight against his spells and minions.
In a fanfiction where Tails meets Sonic for the first time, Tails might be in awe. Sonic's speed and heroic reputation could make Tails instantly idolize him. Maybe Sonic saves Tails from a dangerous situation, like a group of badniks. Tails, being the smart fox he is, could then offer to help Sonic with his gadgets, starting a great friendship.
Their interaction would likely be positive. Sonic, being the friendly hero, would probably greet Tails with a big smile. Tails would be shy at first but soon open up due to Sonic's warm attitude.
There are several factors. First, Sonic and Tails are iconic characters. Their relationship in the official games and shows is deep and complex. Fans are drawn to the idea of taking that relationship further. Second, the 'sonic loves tails' concept allows for a lot of creativity. Writers can create alternate universes where their love story unfolds in different settings, like a post - apocalyptic world or a magical realm. And third, the fan community enjoys sharing and discussing these types of stories, which helps to spread their popularity.
It's hard to say. There are countless Sonic fanfictions out there. While there may be some that involve Tails hurting Sonic, they might not be mainstream popular. It could be that these types of stories are more niche, as they deviate from the typical friendly relationship between the two characters in the Sonic franchise.