You can show their friendship growth through dialogue. For example, in the beginning, Tails might be a bit shy and hesitant in talking to Sonic, but as the story progresses, he becomes more confident and open. Sonic, in turn, could start off as just seeing Tails as a little buddy, but later realizes he's an equal partner. Another way is through shared experiences. If they face a really tough enemy together and at first Sonic is the main fighter, but later Tails steps up and Sonic acknowledges his growth, it shows their friendship evolving.
By showing Amy's reaction. The writer could describe how Amy's face falls, her eyes well up with tears, and she runs away sobbing. This would indicate to the readers that Sonic has said or done something to hurt her.
Amy Rose shows her love by constantly chasing Sonic. She is always by his side during his adventures, ready to help. For example, she'll bring him a meal or offer to patch up his wounds.
It adds a new dimension to the Sonic fandom. It gives fans a different way to explore the relationships between characters. For those who love Sonic and Blaze, it satisfies their desire to see them in a romantic context. It also encourages creativity among fans as they write and share these fanfictions.
Well, it could be about Sonic taking on a darker form or personality. Maybe there's some kind of evil influence that causes him to go dark, like a powerful dark artifact or an encounter with a really bad villain that messes with his mind and makes him turn against his friends.
There could be new original antagonists created specifically for the fanfiction. These might be dark entities that are related to the source of Dark Sonic's power, trying to either control him or use his power to spread chaos in Sonic's world.
Well, 'sonic x sonic to the rescue fanfiction' could potentially center around Sonic characters coming together to rescue a friend or a group in trouble. It could include exciting chase scenes with Sonic's incredible speed being put to good use. There might also be some unique power - ups or abilities that the Sonics discover during their rescue mission. It could also explore the relationship between the two Sonics, whether they have different personalities or if they work in perfect harmony right away.
One common element in the Sonic turns into Dark Sonic fanfiction could be the role of antagonists. They might have a hand in triggering this transformation. For example, by manipulating Sonic's emotions or by using some sort of dark magic. Once Sonic becomes Dark Sonic, his relationships with his friends like Tails and Knuckles also change. His friends may try to bring him back to his normal self, which can create a lot of drama and action in the fanfiction.
One possible theme could be self - discovery. Sonic discovers new aspects of himself during the events of Sonic Unleashed, and this could be a central theme in the fanfic.