In these fics, Sakura often becomes badass through intense training. She realizes that she needs to be stronger to change things in Konoha or to prove herself. For example, she might train under a mysterious master or in isolation, like in 'Sakura's Solitary Training' where she spends months alone in the forest, honing her skills.
Choji can be an interesting addition. He has a long - standing friendship with Shikamaru and his unique eating - based jutsu can be a valuable asset in battles in the fanfiction. With Ino, he can provide some comical relief as well as a different type of fighting style. Also, Kakashi could be paired with them. His vast experience and diverse jutsu knowledge can guide Ino, Shikamaru and the others, and his laid - back but serious attitude can be a great influence on the group.
Sakura might also be paired with Shikamaru. She could be in need of Shikamaru's help when she is facing a medical emergency in a battle situation and Shikamaru uses his shadow blade to fend off the attackers while Sakura tries to save a wounded comrade.
One great book with badass fictional characters is 'The Lord of the Rings' by J.R.R. Tolkien. Characters like Aragorn are badass. He's a skilled warrior, a natural leader, and has the courage to face the dark forces of Sauron. Another is 'Harry Potter' series by J.K. Rowling. Harry himself is a badass as he battles the powerful and evil Voldemort throughout his life at Hogwarts and beyond, not to mention his friends Hermione and Ron who are also very brave. Then there's 'The Hunger Games' by Suzanne Collins. Katniss Everdeen is extremely badass. She volunteers for the Hunger Games to save her sister and shows remarkable survival skills and defiance against the Capitol.
Well, it could be characters like Draco Malfoy. In the original series, he had his moments of growth and in fanfics, he might be one of the main Slytherins to defend Hogwarts. Maybe he finally realizes the importance of the school and his own values change. He could be joined by other Slytherins who were perhaps overlooked in the official story but show their true courage in the fanfic.
In some fanfictions, Snape has badass moments when he outsmarts Voldemort. For example, he manages to mislead Voldemort about the location of a crucial magical artifact. He uses his Occlumency skills to his advantage, hiding his true thoughts and intentions while presenting false information in a very clever way. This not only shows his intelligence but also his courage as he risks his life to deceive the Dark Lord.
By having them face challenges together. For example, they could be tasked with protecting a valuable ninja artifact from a group of powerful thieves. This would force them to communicate, plan, and rely on each other. Shikamaru would strategize and Temari would be ready to fight off any attackers. Through this shared experience, their relationship could grow.
Their relationship would likely become more intimate. They would have to rely on each other more, sharing fears and hopes for the future with the baby. Shikamaru might become more protective of Temari.