The 'Super Saiyan in Tuffle Saiyan War Fanfic' could be really interesting. The Super Saiyan form is often associated with great power, speed, and energy in the Dragon Ball universe. In the context of this fanfic's war, it could mean that the Saiyans with this form are the key to victory. They might be able to break through Tuffle defenses, or their presence on the battlefield could demoralize the Tuffle forces. Also, the journey of a Saiyan achieving the Super Saiyan form during the war could be a central part of the story, like how they overcome their own limits to reach this powerful state and save their race from the Tuffle threat.
There were many novels about the foreign world with the Saiyan bloodline, such as "Familiar Simulation: Getting the Saiyan Bloodline at the Beginning","Super Saiyan Foreigner","Saiyan Bloodline in the Foreign World","Super God Fantasy System","Douluo's Super Saiyan Legend","Dragon Ball: The Beginning System Ran Away", and so on. Most of these novels belonged to the category of fantasy and alternate continents or light novels and derivative doujinshi. After the protagonists obtained the Saiyan bloodline, they began a series of adventures in the other world. I hope you like this fairy's recommendation. Muah ~😗
She could be an original character created by the fanfiction writer. Maybe she has some special abilities like being able to control a unique form of energy that Goku has never seen before.
" The Genius Manager of a Superstar " matched the given information. The main character was reborn as a Saiyan and had a younger sister. Therefore, I strongly recommend this novel to you. I hope you will like it!😉