At first, it could be strained. Sasuke is so focused on his revenge that he might see his sister as a distraction. But as time goes on, he starts to realize her importance. Maybe when he's in a difficult situation and she comes to his rescue, he begins to value her more. Their relationship could then grow into one of mutual respect and protection.
Well, Sasuke is a rather brooding character. Usagi, on the other hand, is very bubbly. Their relationship could start with Sasuke being dismissive of Usagi. However, when Usagi shows her courage and strength in battles, Sasuke would start to see her in a new light. As time goes on, they would share their past traumas and grow closer. For instance, Usagi could tell Sasuke about her struggles against the Dark Kingdom, and Sasuke could open up about his clan's massacre. This mutual understanding would strengthen their bond.
In the hospital setting, Sasuke might initially be his aloof self. But as Sakura takes care of him or they face challenges together, he could start to open up more. For example, if Sakura is overworked, Sasuke might offer a helping hand in small ways, like getting her coffee. This would show his growing affection for her.
If Sasuke's sister was in the picture, Naruto and Sasuke's relationship might soften more quickly. Naruto would see another side of Sasuke through his sister. He might also feel more of a connection to Sasuke's family. Sasuke, on the other hand, would see Naruto's genuine care for his sister, which could make him trust Naruto more.
After getting married, their relationship might develop with more trust. Sasuke, who has always been a bit of a loner, would start to open up more to Sakura. He would share his thoughts and feelings with her, which would make their bond stronger.
At first, it might be a lot of awkward glances and small, hesitant interactions. Sasuke isn't used to expressing emotions, so it would be a slow start. But as time passes, he might start leaving little notes for Sakura in her locker, or walking her home from school on occasion.
At first, it might be a bit rocky. Sasuke is not used to taking care of a baby. But as he spends more time with Naruto, he starts to care deeply. Naruto, as he grows up under Sasuke's care, would look up to Sasuke like a father figure. They would develop a mutual trust and understanding.
Their relationship could start off rocky. Sasuke, being a vampire, might be cold and distant at first. But as Sakura shows her determination and love for him as his bride, he could gradually warm up. For example, he might start to share his vampire secrets with her. Over time, they could become a powerful couple within the vampire world, with Sakura learning to use her skills to support Sasuke in his vampire endeavors.
Their relationship could start off very tentatively. Sasuke, being so used to solitude, might be a bit standoffish. But Hinata's gentle nature could gradually break down his walls. They might start with simple exchanges, like Sasuke noticing Hinata's Byakugan abilities during a battle or training session. This could lead to a mutual respect, and as time goes on, they could become friends and perhaps more depending on how the story progresses.
Sasuke and Tenten's relationship could develop through mutual respect. Sasuke respects Tenten's skills with weapons, and Tenten respects Sasuke's power. They start to communicate more, sharing their ninja experiences. This deepens their bond, and they become more affectionate towards each other. Eventually, they become a power couple in the ninja world, with their relationship based on trust and understanding.
In a time - travel scenario, Sasuke could learn from different eras. Say he travels to a time of great peace in the ninja world. He would be exposed to different values and ways of life, which could soften his cold exterior. He might start to value friendship and cooperation more, as he sees how effective they are in maintaining peace.