One common theme is redemption. Qrow often has a troubled past, and in many fanfics, the reader helps him find a path to redemption. For example, in some stories, the reader's positive influence makes Qrow want to change his self - destructive habits.
Friendship evolving into love is also quite common. At first, they might start as friends, with the reader getting to know Qrow's true self. As they spend more time together, those feelings of friendship gradually turn into something deeper and more romantic.
Often, the theme of family - like Qrow becoming a surrogate family member to the child reader - is quite common. Also, the idea of the child bringing out the better side of Qrow can be a recurring theme. He may have been a bit of a loner or had his own issues, but the presence of the child changes him for the better.
A common theme is the 'opposites attract' concept. Qrow is often depicted as more of a free - spirited and rough - around - the - edges character, while winter is very disciplined. Their differences create an interesting dynamic in the fanfics.
One common theme could be the exploration of their friendship in a more romantic or sexual context. Since they are likely characters from a particular story, their pre - existing relationships and interactions in the original work can be re - imagined in a Yaoi way.
One popular qrow x reader fanfic is 'A Drunken Encounter'. It has great character development for both Qrow and the reader. The story is set in a tavern where an interesting conversation between them starts. It shows Qrow's complex personality in a really engaging way.
I'm not sure of specific 'qrow x child reader fanfic' offhand. You could try searching on popular fanfic websites like Archive of Our Own. There might be some heartwarming stories there where Qrow has an interesting relationship with the child reader, perhaps a mentoring or protective kind of bond.
One common theme is the power imbalance. Since it's a god and a reader, there's a huge difference in power. This often leads to the god protecting the reader. Another theme is the discovery of the divine. The reader gets to see and experience things that are beyond normal human understanding because of their connection to the god.
One common theme is friendship. The fics often show the reader building strong friendships with the ATEEZ members. Another theme is adventure, like going on a journey with them.
One common theme is time - like the reader being from a different time period and having to navigate a relationship with Hamilton in his own time. Another is love against the odds, given Hamilton's complex life and status.
Protection is also a frequent theme. Luigi is often portrayed as protective towards the reader in fanfics. He uses his skills and courage to keep the reader safe from various threats in the Mushroom Kingdom or other fictional settings. And of course, the theme of discovery. The reader discovers new things about Luigi and themselves as the story progresses.
One common theme is healing. Toriel often helps the reader heal from past traumas or difficult experiences. Another theme is the discovery of family. Since Toriel has that motherly quality, the fanfics often explore how the reader finds a sense of family with her.