One possible fanfic could be about a student of Orochimaru who rebels against his evil ways. This student, perhaps having seen the destruction Orochimaru causes, decides to use the knowledge he has gained in a positive way. He might start by secretly helping the Hidden Leaf Village, using his skills in jutsu and forbidden arts to protect rather than harm.
The student could go on an adventure to find a cure for Orochimaru's curse mark. Since Orochimaru often experiments with curse marks on his students, this one particular student might be determined to find a way to get rid of it once and for all. He could travel to different hidden villages, seeking out ancient scrolls and wise sages for answers.
Another aspect could be the student's struggle to adapt to the ninja world while being in Orochimaru's territory. They would have to learn ninja skills quickly. Since they are an OC (original character), they might have some unique abilities from their past life that could either help or hinder them. For instance, if they were a science whiz in their previous life, they could try to introduce new scientific concepts to Orochimaru's lair, which might earn them respect or suspicion.
Perhaps the fanfic could be about an Orochimaru's student who is sent on a secret mission. On this mission, they meet different characters who make them question their loyalty to Orochimaru. They could also find a hidden power within themselves that is not related to Orochimaru's teachings. This new power could be the key to their redemption or a new path away from Orochimaru.
One possible fanfic could be about a student of Orochimaru who struggles with the dark arts they are being taught. This student might start to question Orochimaru's motives as they see the harm his experiments cause. For example, they could witness the pain of the test subjects in Orochimaru's lair and decide to rebel. They might try to find a way to use the knowledge they've gained for good, like developing healing jutsu based on Orochimaru's research on the human body.
A great plotline could be the student trying to find a way to stop Orochimaru from taking over other people's bodies. Since they are an outsider, they might see the situation more objectively. They could start by gathering information about Orochimaru's motives and weaknesses. Maybe they discover a hidden scroll in Orochimaru's lair that contains the secrets to his immortality plans, and they have to figure out how to destroy it.
In some Orochimaru lemon fanfic, he might be portrayed as having a more seductive or alluring side. However, this is a very unorthodox view compared to his original character in the Naruto series. His intelligence and cunning nature might still be emphasized, but in a more sexually charged context which is not really in line with the official Naruto story.
I recommend "Naruto: Murder of the Blood" and "Naruto: The Beginning of the Awakening of the Corpse Vein." Both of these novels are Doujinshi novels with Orochimaru as the main character. In "Naruto: Murder of the Blood", the main character walks through the Ninja Realm as Hiroto Norikazu, causing the entire Ninja Realm to tremble and tremble. The protagonist in "Awakening the Corpse Vein at the Beginning" had the ability to devour blood and chakras to obtain other people's abilities, talents, and memories. He grew from a small assistant under Orochimaru to a shadow that controlled Ninja Realm. Both novels are very interesting. You can read them. I hope you like this fairy's recommendation. Muah ~😗
In some fanfictions, Orochimaru might develop a sense of loyalty towards Naruto. After being around Naruto for a while, he could see Naruto as someone worthy of his loyalty. This could lead to him being more open to working with the Hidden Leaf and helping Naruto in his various missions. He might even sacrifice his own interests to protect Naruto at times, which is a complete turnaround from his initial character.
Well, in some fanfictions, Orochimaru might use some forbidden jutsu. He could have combined his knowledge of resurrection techniques with some unique chakra sources. Maybe he found a way to reverse the death process by using the power of the snakes he has a connection with. For example, he could have used the regenerative abilities of the snakes' chakra to bring Naruto back to life.