Regarding the relationship with other characters, Kakashi's overprotectiveness of Sakura can strain relationships. For example, the other ninja in the village may think Kakashi is playing favorites, which could lead to resentment among some. With their own teammates, it can be a bit of a mess. Naruto might try to understand at first but as time goes on, he may get frustrated that Kakashi seems to be only concerned with Sakura's safety. Sasuke may view it as a sign that Sakura is not as strong as she claims and this could further damage their already complex relationship.
It can make other characters view their relationship as very exclusive. For example, Ron might feel left out sometimes if Harry is constantly overprotective of Hermione. This can create some tension between Ron and Harry in the fanfiction.
It could make his relationship with Naruto tense. Naruto might notice Kakashi's special attention to Sakura and feel jealous or confused. After all, Naruto also cares a great deal about Sakura. And with Sasuke, Kakashi's obsession could make Sasuke distrust him more, as Sasuke is also connected to Sakura in his own way.
It can limit Percy's growth as a character. If Artemis is always protecting him, he might not get to face challenges on his own and develop fully. Other characters might feel sidelined because Artemis is so focused on Percy. For example, some of Percy's friends who also want to help him might find it hard to get involved if Artemis is constantly stepping in.
It can speed up their relationship development. His overprotectiveness shows his feelings for her, and Hinata may feel more secure and cared for. This can lead to her opening up more to Naruto and their relationship becoming closer faster.
Well, it really depends on how the author writes it. If the overprotectiveness is written in a way that respects Marinette's agency, it could be a cute and endearing aspect of their relationship. But if it comes across as controlling, it might make Marinette resent Adrien, and then they would have to work through those issues to have a healthy relationship.
For Tomoyo, she might be overjoyed as she has always been supportive of their relationship. She could see this kiss as a sign of their relationship deepening and might start planning more things for them, like new outfits for their future 'dates' in card - capturing adventures.
For the new generation of ninja like Boruto and his friends, they might view Sakura's overprotectiveness as strange. Boruto in particular, who has his own views on Naruto, might not understand why Sakura is so over the top in protecting Naruto. This could lead to some misunderstandings between the generations.
It might initially make Percy feel smothered. He's used to being independent, and having Artemis constantly hovering could make him a bit resentful. But on the other hand, it could also make him feel safe. Given that he's 'broken', having someone so powerful care about his well - being could start to heal some of his emotional wounds.
His overprotectiveness towards his sibling might make his friends a bit cautious. They might not want to involve Naruto's sibling in any dangerous missions or activities for fear of angering Naruto. For example, Kakashi might be more hesitant to let Naruto's sibling go on a mission with the team.
Clarise's overprotectiveness can affect the relationships in the story. It could strain her relationships with other characters who don't approve of her actions. At the same time, it might strengthen her bond with Percy, either in a positive way if he appreciates it, or in a negative way if he feels smothered. This complex web of relationships influenced by her overprotectiveness can drive the story forward in many different and unexpected ways.