Well, the OC could be a descendant of an ancient race that has a special connection to the energy that Towa uses. Towa wants to use this connection for her own gain. As the story progresses, the OC discovers their heritage and uses it to fight back against Towa. Or, the OC might be a lost soul who Towa finds and tries to corrupt. However, the OC's pure heart resists her influence. Additionally, the OC could be a new recruit in the Time Patrol who is assigned to deal with Towa. During their encounters, an unexpected bond forms between them.
In Dragon Ball Xenoverse Towa fanfiction, a great plot could be Towa's attempts to understand the concept of love. Since she is often portrayed as a villain, seeing her struggle with emotions like love could be very interesting. You could also write about Towa getting trapped in a different dimension and having to rely on her wits and some unlikely allies to get out. And perhaps a story where Towa discovers a new form of power within herself, but it comes with a price that she has to decide whether or not she is willing to pay.
Perhaps an OC that is a powerful wizard in the Dragon Ball universe. This wizard OC discovers a dark magic that is threatening to consume the universe. They must then seek the help of the Z - fighters, who are initially skeptical of magic. The OC has to convince them of the danger and together they find a way to stop the dark magic. Along the way, the OC teaches the Z - fighters about the power and responsibility of magic.
One way to develop their relationship is through shared goals. Maybe they both have an interest in a certain power source or a desire to change the course of history in a particular way. They start working together towards this goal, but there are differences in their approaches. Towa might be more ruthless while the OC has a more moral stance. This creates tension but also opportunities for them to understand each other better. Another aspect could be flashbacks or backstories that show how their paths could have crossed before, even if they don't remember it at first. This can add depth to their relationship. Also, emotional moments like when one saves the other's life can be a turning point in their relationship development.
Another plot could involve Towa traveling to different timelines not just to cause chaos, but to find a way to bring back a lost loved one. Maybe she has a family member from her own race who was killed in a long - ago battle, and she believes that by manipulating the Dragon Ball timelines, she can resurrect them. Along the way, she has to deal with the Z - Fighters who are trying to stop her time - meddling.
One idea could be Frost forming an unlikely alliance with the heroes in the Xenoverse to face a new, greater threat that endangers all of existence. Maybe this new enemy has the power to disrupt time and space, forcing Frost to put aside his usual villainous ways.
Perhaps a fanfiction where a young Saiyan from a destroyed planet manages to find their way to the Xenoverse 2 world. This Saiyan has a different fighting style compared to the ones we know. They join the Time Patrol not just to save timelines but also to find a new home for their kind. Along the way, they face discrimination from some of the other races in the Xenoverse due to their Saiyan heritage, but they prove themselves worthy through their strength and determination.
Well, a cool plot for Dragon Ball Xenoverse Crossover Fanfiction could be a time - traveling crossover. Imagine characters from different anime universes being brought to the Dragon Ball Xenoverse timeline. For example, characters from Fullmetal Alchemist arrive in the Xenoverse. Edward could use his alchemy skills against the Dragon Ball villains, and Alphonse could have some really interesting interactions with the Dragon Ball characters, like Bulma or Master Roshi.
One idea could be a crossover with the Naruto universe. Imagine Goku and Naruto teaming up to fight a common enemy like a powerful, evil entity that combines the worst aspects of the Akatsuki and the Red Ribbon Army. They could learn from each other's fighting styles, with Naruto teaching Goku about chakra and Goku showing Naruto the power of ki.
Well, for Towa in Dragon Ball Xenoverse fanfiction, Krillin could be a good ally. He has a big heart and despite not being as powerful as some of the Saiyans, he has a lot of wisdom. His friendship could be valuable to Towa. Yamcha could also be considered. He has his own set of skills and his loyalty could be an asset. And Chi - Chi could be an ally as well. She's protective and could help Towa understand the importance of family values, which might be a new concept for Towa.
One idea could be a story where a new character from an alternate timeline enters the Xenoverse 2 world. They have a unique power that disrupts the normal flow of time rifts. This new character teams up with the Time Patrollers to fix the chaos they unknowingly caused. Another could be a fanfic focusing on the backstory of an existing minor character in the game, like how they came to be a part of the Xenoverse in the first place.