Well, perhaps they are in a hidden underground base during a war. There are limited resources and space, so they have to sleep in the same room. But the focus is on Naruto training Sakura in her sleep to help her gain more chakra control. Naruto has some special ability in this fanfiction that allows him to enter someone's subconscious while they sleep and he uses it to train her secretly.
One possible plot could be that they are in a genjutsu - induced sleep together. They are trapped in a shared dream - like state created by an enemy's genjutsu. In this state, they have to work together to break free from the illusion while they are 'asleep'. It could be about their teamwork and how they rely on each other's skills to overcome the danger.
One possible plot could be that they leave to find a new way to strengthen Konoha. Maybe they've heard of a powerful jutsu or artifact outside the village that could enhance the village's defenses. They journey together, facing various challenges like difficult terrains and enemy ninja along the way. During their travels, they might also have deep conversations, strengthening their bond as friends and comrades.
One possible plot could be that they face a powerful new enemy that threatens the Hidden Leaf Village. This enemy has unique abilities that require all three of them to combine their skills. Naruto uses his Rasengan, Sasuke his Chidori, and Sakura her superhuman strength to break through the enemy's defenses.
One possible plot could be that after all the battles and hardships, Naruto, Sasuke and Sakura decide to go on a mission together to help a small village. Along the way, they start to really understand each other on a deeper level. Naruto's optimism starts to rub off on Sasuke, and Sakura's medical skills are crucial in saving some villagers from a strange illness. They learn to work as a seamless team, and in the end, they realize that their bond is stronger than ever.
Yes, there might be some fanfictions that handle this scenario in a very innocent and platonic way. For example, they could be in a situation like a camping trip where they have to sleep in the same area for safety reasons but nothing inappropriate occurs. It would focus more on their friendship and the adventure they are on.
One possible plot could be that they have an unexpected adventure together that makes them realize their feelings for each other during the night. Maybe they are in a dangerous situation, like lost in a magical forest. They have to rely on each other for warmth and protection, which leads to them sleeping close together and developing a deeper bond.
A plot could be that after a great war, they decide to rebuild their village together. Naruto as the leader, Sasuke as his right - hand man in security matters, and Sakura in charge of the medical and educational aspects. Working side by side day in and day out, they develop a deep friendship. They have regular meetings where they not only discuss village matters but also share personal anecdotes, which makes their bond grow stronger.
One possible plot twist could be that Naruto and Sakura are forced to betray their village under some kind of mind - control. Maybe an enemy has a powerful jutsu that can manipulate their thoughts and actions. So, they end up doing things that seem like a betrayal to their friends and comrades.
Well, perhaps in this fanfiction, Naruto is put in a situation where he has to hypnotize Sakura to protect her from an enemy. The enemy is after some information that only Sakura knows. Naruto hypnotizes her to make her forget the information temporarily so that the enemy can't get it. This could lead to a series of events where Naruto has to keep Sakura in a hypnotized state while they figure out how to deal with the enemy.
One possible plot could be that Naruto wakes up in the middle of the night, unable to move due to sleep paralysis. He might see strange shadows or figures in his room that seem menacing. Maybe he tries to use his chakra but finds he can't in this state. As he lies there, he could start to recall past traumas or fears, and the experience could make him question his own strength and courage.
The plot might involve Naruto and Ino training together for a big upcoming battle. Ino could be helping Naruto with his sensory skills while Naruto helps her with her strength training. They might also have some friendly competitions during the training, which not only make the training more fun but also help them discover new abilities within themselves. And in the end, they become a stronger team ready to face any threat.