Obviously, Kari and Gennai are the main characters. Kari is the one in the difficult situation, struggling against Gennai.
Well, Kari and Gennai are the key players. Kari is the character that we are focused on as she struggles. Gennai, on the other hand, is the source of her struggle. He has her in his grip, so the whole fanfiction is likely to revolve around their interaction. There could be other minor characters as well, like those who might be aware of Kari's situation from a distance and might try to help, but Kari and Gennai are the main ones driving the story.
Well, it could be about Kari being physically restrained by Gennai in a dark place, perhaps a dungeon. She might be struggling to break free, both physically and mentally, while Gennai has some evil intentions towards her.
The main characters are surely Anzu and Dark Bakura. But there could also be other characters from the original series who might play supporting roles. For example, Yugi could be someone who tries to help Anzu break free from Dark Bakura's grip. Or perhaps some of the other friends like Joey or Tristan might also be involved in some way, either by being directly affected by Anzu's situation or by trying to find a way to rescue her.
Since I'm not familiar with this fanfiction, it's difficult to say. However, if it's a fantasy - themed fanfic, the main characters could be magical beings who are affected by this 'cell's grip' and have to overcome 18 struggles. It could also be ordinary people in a dystopian setting where some sort of cell - related phenomenon is causing them problems.
Obviously, Sakura and Tobi are the main characters. Sakura is the one who is struggling, and Tobi is the one whose grip she is in.
Obviously, Sakura and Tomakazu are the main characters. Sakura is the one who is struggling, so she's a central figure in the story. Tomakazu, on the other hand, is the one whose grip is causing the struggle.
Obviously, Sakura and Tomokazu are the main characters. Sakura is the one who is struggling, and Tomokazu is the one whose grip she is in.
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 main characters in this fanfiction are Sakura and Itachi's clones. Sakura, with her own set of skills and personality traits, is the focus of the story as she endures the struggle. Itachi's clones bring the conflict into the story. They may possess some of Itachi's signature abilities, like the Sharingan, which could make them extremely difficult for Sakura to handle. Their presence forces Sakura to use her own strength, whether it be her physical combat skills or her intelligence, to try and overcome the situation they've put her in.
Obviously, Sakura and Sasuke are the main characters. Sakura is the one struggling, and Sasuke is the one whose grip is part of the situation, likely due to a curse.
Sakura is clearly going to be one of the main characters since she is mentioned in the title as the one struggling. And the menma monster would also be a main character as it is the source of the struggle for Sakura.