One possible plot could be that the OC, as the son of King Cold, struggles to live up to his father's fearsome reputation. He might be conflicted between following in his father's tyrannical footsteps or forging his own path of redemption and justice in the universe.
The plot could involve the OC son of King Cold being exiled from his family for showing signs of weakness or having different values. He then has to journey across different planets, facing various challenges and making allies along the way, all while trying to figure out his place in the cosmos and how to deal with his family legacy.
Well, King Cold himself would surely be an important character. He could be portrayed as a strict and overbearing father figure, constantly pressuring the OC to be more like him. Frieza could also be a main character, perhaps as a jealous brother who sees the OC as a threat to his own position in the family hierarchy.
Well, one possibility could be that the OC, being the son of Tsunade, has to deal with the high expectations set by his mother's reputation. He might struggle to find his own identity in the ninja world, distinct from being just Tsunade's son. Maybe he has a special jutsu or ability that he discovers and uses to make a name for himself.
Well, it could be about the OC growing up in the shadow of Erza Scarlet. Maybe he's trying to live up to her reputation as a great wizard in the Fairy Tail guild. He might face challenges that test his loyalty and strength, just like Erza did.
The plot could start with Naruto discovering his true heritage as the son of King Cold. This would shock the ninja world. He might then have to deal with people's fear and mistrust of him. Meanwhile, he could start to develop some of King Cold's powers, like the ability to survive in extreme cold or have some sort of energy - based attacks similar to those in Dragon Ball. And he would have to decide whether to embrace his new identity or reject it and continue to be just a ninja.
One possible plot could be Naruto growing up in the Saiyan world with King Vegeta as his father. He would have to deal with Saiyan politics and rivalries while also having his own ninja - like abilities from his Naruto side. Maybe he would try to unite the Saiyans in a different way than in the original Dragon Ball story, using some of Naruto's ideals of friendship and perseverance.
Maybe it's about Harry's journey to prove himself worthy of the throne.
Well, it could be about the OC, as the son of Thor, coming to the Highschool DxD world and showing off his godly powers. Maybe he'd have to deal with the various factions in the school, like the devils, angels and fallen angels, while also trying to fit in.
Well, it could start with the discovery of the OC's identity as Grayfia's son. This would surely stir up a lot of reactions among the different factions in the Highschool DxD universe. He could be thrust into various adventures, like having to protect a certain character or retrieving a powerful artifact. His relationship with his mother, Grayfia, would also play a significant role, perhaps she has certain expectations of him that he struggles to meet while also dealing with his own desires and goals.
Well, it could be about the OC being transported to the Dinosaur King world and meeting Rex. They might go on adventures together, facing various challenges like battling other Dinosaur King opponents. The OC could have some special abilities that help Rex in his quests.
One possible plot could be that Harry discovers his true heritage as King Arthur's son. This would likely throw the wizarding world into chaos as it challenges the existing ideas about his family. He might inherit some of Arthur's leadership and combat skills, which could be used to fight Voldemort in a new and unexpected way.