The ending of the Shikimori manga is quite satisfying. The main characters reach a conclusion that feels right for their journey, and loose ends are neatly tied up.
In many fanfictions, after Naruto asks Hinata out, there are some challenges they face. Maybe there are other ninjas who are jealous of their relationship. But they overcome these difficulties together. They train together and become stronger as a couple. For example, they might face a new enemy who tries to use their relationship against them, but they stand united and defeat the enemy, which makes their bond even stronger.
Well, there might be characters from their clan. Since Itachi is from the Uchiha clan, other Uchiha members could play significant roles. They could be elders or other young Uchiha who are involved in the clan's affairs and in turn, affect Itachi and Izumi's story.
One common theme is the transformation of their relationship from enmity to love. They used to be rivals, but in these fanfictions, they start to see each other's good sides. Another theme is the internal struggle. Draco often has to overcome his pride and family expectations, while Harry has to deal with the shock and the potential judgment from his friends. Also, the Hogwarts setting is often used as a backdrop, adding a touch of magic and nostalgia to the story of Draco asking Harry out.
Well, perhaps Percy plans this elaborate scheme to ask Annabeth out. He might enlist the help of their friends, like Grover. Grover could set up a picnic in a beautiful meadow. Percy then shows up with a bouquet of Annabeth's favorite flowers and asks her out. She would be touched by the effort he put in and say yes. Then they start planning all the things they want to do together on their first official date.
Yes, there are quite a few good ones. You can start by looking on fanfiction platforms like Archive of Our Own. Some fanfictions in this theme explore the development of their relationship in a very interesting way, often with a lot of character growth and unexpected plot twists.
Well, a frequent plot is the culture clash. Draco, coming from a pure - blood family with certain traditions, and Hermione, a Muggle - born witch with her own values. Their relationship starts as a way to bridge this gap. Also, there's the plot where they are forced to work together on a project, and during that time, Draco falls for Hermione and decides to ask her out.