Obviously, Sakura and Kidomaru are the main characters. Sakura, the strong - willed kunoichi from the Naruto series, and Kidomaru, one of the Sound Four members.
Perhaps the fanfiction focuses on Sakura's mental struggle as well. While in Kidomaru's arms, she might be thinking about her friends, her training, and how she can outwit him. She could be recalling all the jutsu she has learned and strategizing on how to turn the situation around. For example, if she has some knowledge of Kidomaru's weaknesses from previous battles or intel, she could be planning to use that to her advantage while still in his grasp.
One possible aspect could be that in fanfiction, Kidomaru's six arms might be used in a very unique way in relation to the sakura. For example, he could use his multiple arms to perform some sort of special dance or ritual among the sakura trees. This could be a part of a cultural or spiritual event within the fan - created world. Maybe his six arms give him an advantage in collecting sakura petals for some magical purpose, like creating a powerful potion or a charm that is related to the beauty and transience of the sakura.
One possibility is that this encounter is a result of a misunderstanding. Kidomaru might mistake Sakura for someone else and pins her with his six arms. Sakura, in shock, has to quickly figure out how to communicate with him to clear the confusion.
Sakura and Kidomaru are the central characters. Sakura, with her pink hair and determined personality, is caught in a tough situation against Kidomaru. Kidomaru, on the other hand, has some sort of advantage with his grip on her. Their interaction and the way Sakura tries to overcome Kidomaru's hold are likely to be the focus of the fanfiction.
The six arms could be used for combat in a sakura - themed setting. He might use them to swing from sakura branches, using the trees as a sort of battlefield advantage. His arms could also be used to grab and throw sakura - covered boulders or other objects at his enemies.
Well, perhaps Sakura could be in a fight situation where Kidomaru has a tight grip on her, and she tries to use her medical ninjutsu skills to somehow break free. Maybe she'll also call for help from her comrades in the fanfiction.
In such a fanfiction scenario, it could be a very intense situation. Maybe Kidomaru uses his six arms to physically restrain Sakura. This could lead to a fight where Sakura has to use her medical ninjutsu skills in a more combat - oriented way to break free. For example, she might use her chakra enhanced strength to push Kidomaru's arms away.
Perhaps Sakura uses her intelligence to outwit Kidomaru while in his armsgrip. She could trick him into loosening his grip by making him believe she has some valuable information or by creating a diversion. For example, she might pretend to be injured more severely than she actually is, causing Kidomaru to let his guard down slightly as he tries to assess the situation.