During his alone time, Sasuke could also be reflecting on his past. He might think about his family, his time in Team 7, and all the events that led him to where he is now. This could be a time of deep emotional introspection for him, sitting by a lake, staring at his own reflection and seeing the faces of those he has lost.
Sasuke's alone time in fanfiction could involve him training intensively. He might be in a secluded forest, practicing his new jutsu. His Sharingan could be glowing as he focuses on perfecting his moves, lost in his own world of self - improvement.
One common theme is solitude and self - discovery. Sasuke is often portrayed as using his alone time to understand himself better, to figure out his true goals and desires away from the influence of others.
There are many great Sasuke fanfictions out there that focus on his growth, his relationships with other characters like Naruto in a more positive and non - inappropriate way. For example, some fanfictions might explore his journey to redeem himself after his time with Orochimaru. Another type could be about his training and how he hones his skills further.
In a Sasuke time travel to the Sannin era fanfiction, Sasuke would be faced with a lot of opportunities and challenges. He could use his knowledge from the future to his advantage. For example, he might know about certain threats that the Sannin were not aware of. He could also be a key player in the battles of that era. His Sharingan would be a very valuable asset. However, he would also have to adapt to the different political and social situations of that time. His interactions with the Sannin would not only change his own future but also the future of the shinobi world as a whole.
Another possibility is that they get into a bit of a light - hearted argument over something silly like who has the better taste in food. But in the end, they would just laugh it off and realize how much they enjoy each other's company during this alone time.
In fanfiction, during their alone time, Natsu and Lucy might simply have a deep conversation. They could talk about their dreams, like Natsu sharing his desire to find Igneel more in - depth, and Lucy might open up about her hopes for her Celestial Spirit magic to grow stronger.
Sasuke might become more isolated. Without Sakura's presence, he could sink deeper into his brooding and revenge - seeking state. He may start to question if he has truly lost something valuable, which could either harden his resolve further or make him more self - reflective in a negative way.
They might start by arguing as they have different personalities and beliefs from their time at Hogwarts. But then, they could gradually discover new sides of each other. Maybe Draco would share his insecurities about his family's reputation, and Hermione would listen with empathy.
It's possible that they could play some simple games during the sleepover. Since they are shinobi, they might even have some friendly competitions related to their ninja skills, but in a very light - hearted way, like seeing who can do a simple jutsu faster without using too much chakra.
Peter might have an internal monologue about his loneliness. For example, he could be sitting in his room, staring at the ceiling, and thinking about how he can't really share his true self with anyone. He misses having a normal life where he doesn't have to constantly hide his identity.
It could be that in the fanfiction world, Hermione was the victim of a spell gone wrong. This spell could have made her pregnant and also somehow cut her off from her usual support system, leaving her alone. Or perhaps she made a choice to distance herself from others because she didn't want to endanger them while she was dealing with this unexpected pregnancy.