There could be a plotline where Harry discovers his relation to Tywin and has to deal with the shock and the implications. He might face opposition from those who don't trust him because of his sudden appearance in the family. Also, there could be a story where Harry tries to reform the family's more ruthless ways using his own sense of justice, which he developed in his own world. He could be in a constant struggle between the traditions of Tywin's family and his own beliefs.
One possible plotline could be Harry trying to gain Tywin's approval while also holding onto his own values. Another could be Harry using his unique skills to help Tywin in his political maneuvers.
Yes, there are quite a few. You can check some popular fanfiction websites like Archive of Our Own. Just search for 'Harry grandson of Tywin' and you'll likely find some interesting stories.
One plotline could be Harry's discovery of his relation to Grindelwald. Maybe he finds an old family heirloom or a hidden letter that reveals the truth. Another could be how the wizarding community reacts to this news. Some might fear Harry, thinking he has inherited Grindelwald's dark tendencies.
A plotline might involve Sansa trying to protect her unborn child from the dangerous political games in Westeros. With Tywin as the father, the child would be in the middle of many power plays. Also, there could be a plot where Sansa uses the pregnancy to try and change the Lannisters' attitude towards her and her family. Maybe she hopes to bring some peace between the Starks and the Lannisters through the child. It could also explore how Tywin would react to having a child with Sansa, considering their different backgrounds and ages.
One possible plotline could be that Naruto discovers his connection to the Sannin later in his life. This new knowledge gives him access to hidden jutsu or knowledge that the Sannin had. For example, he might learn some unique medical ninjutsu from Tsunade. Another plot could involve Naruto facing enemies who are after the secrets that the Sannin might have passed down to him.
A plotline might involve the magical community's reaction. Since Grindelwald was a feared dark wizard, when the news spreads that Harry is his grandson, there could be a lot of chaos. Some might fear that Harry has inherited Grindelwald's dark tendencies. However, Harry could use this situation to prove that one's upbringing and choices matter more than blood relation. He could embark on a journey to clear the name of the Potter family and show that he is different from his grandfather.
One possible plotline could be Harry being easily tricked by dark wizards who take advantage of his naivete. For example, they might convince him to perform dangerous spells or go to forbidden places. Another could be that he misinterprets the intentions of his friends, causing some rifts in their relationships until he eventually learns the truth. Maybe he also gets involved with some new magical creatures that he wrongly believes are harmless because of his naivete.
One possible plotline could be Harry using his vegan lifestyle to promote animal rights in the wizarding world. He might start a club or campaign within Hogwarts to encourage others to be more conscious about their food choices.
Perhaps Harry becomes a priest to atone for the sins and destruction caused during his battles in the wizarding world. His journey could involve him trying to bring peace and spiritual guidance to a war - torn or troubled community. And along the way, he might face challenges from those who sense his 'different' past.
One possible plotline could be that Madara's great - grandson discovers a hidden power within himself. Maybe he finds an ancient scroll left by Madara that contains a unique jutsu. He then has to train hard to master this jutsu while also facing off against new enemies who want the power for themselves.
One possible plotline could be Naruto growing up with a different set of skills influenced by Tsunade. Since Tsunade is known for her medical ninjutsu and super strength, Naruto might have an earlier inclination towards medical skills. He could be trained in a more balanced way between combat and healing. For example, in battles, he not only uses his regular jutsu but also heals his comrades instantly on the spot. Another aspect could be the political influence. Tsunade being an important figure in the village, Naruto might have a different standing in the village hierarchy from the start and face different kinds of challenges related to leadership and decision - making.