Magic and the supernatural are often themes as well. Stolas has powerful magic abilities, and fanfics play with how he uses them, discovers new powers, or how his magic affects his relationships. Some fanfics also explore the origin of his magic and how it ties to his family's history.
There's 'Stolas and His Daughter'. This fanfic focuses on Stolas' relationship with his daughter. It shows his more tender side and how he tries to be a good father in the complex world he lives in. It's a heartwarming read.
Another theme is the power dynamic between them. Stolas is a powerful demon with a high social standing, while Blitz is more of an underdog in a way. Fanfictions may play with this power dynamic, sometimes having Blitz gain power or influence in the relationship, or Stolas learning to respect Blitz's agency more. Also, there are often themes of redemption and self - discovery for both characters within the context of their relationship in these fanfictions. They might grow and change as a result of their connection to each other.
A plotline might involve them going on adventures together outside of their usual work - related tasks. They could discover new aspects of each other's personalities and grow closer as a result. Also, there could be a plotline where they face opposition from other characters in the Helluva Boss universe who don't approve of their relationship.
The green bird was a kind of bird of happiness in mythology. There were different descriptions in different legends. In Journey to the West, the green bird was the incarnation of the Taishang Laojun, who prayed for his master's peace and happiness. And in 'Dream of the Red Chamber', the green bird was Jia Baoyu's pet, representing happiness and good fortune. However, it should be noted that the meaning of the blue bird in different myths may be different, so whether it is really a happy bird also needs to be understood according to the specific story background and setting.
The tame bird is used to living in captivity, relying on humans for food and shelter. It may be more docile and accustomed to a restricted environment. The free bird, on the other hand, enjoys the freedom of the sky, flying wherever it wants, facing the challenges and uncertainties of the wild on its own.
The contrast between their characters. Stolas is refined and powerful, while Blitz is rough around the edges and scrappy. This creates a dynamic that fans find interesting to explore in fanfiction.
You can try websites like Archive of Our Own (AO3). It has a large collection of fanfictions across various fandoms, and there are likely many Stolas x Blitz fanfictions there. Just use the search function on the site.
The tame bird in the story can be seen as a symbol of a sheltered life. It's content with what it has been given by its human keeper. This is similar to how some people are satisfied with a simple, uneventful life. On the other hand, the free bird is a symbol of the untamed spirit. It stands for the idea that there is more to life than just the basics. It represents the longing for adventure, for seeing new horizons, and for experiencing the fullness of life without boundaries. It's about breaking free from the shackles of routine and convention to experience the vastness of the world, just as the free bird experiences the vastness of the sky.
There were a few novels about transmigrating into birds that could be recommended. One of them was " I Transmigrated and Became an Eagle." The story was about the protagonist, Hao Shuai, who transmigrated and became an eagle. He began to find his way home and embarked on a series of adventures. The other book was " Little Sparrow Is Not Immortal." The protagonist Qin Yubing was turned into a bird by Buddha. The specific type of bird needed the readers to read it themselves. In addition, there was another book called " Reborn into a Bird ", which told the story of an unknown birdman. These novels could be recommended for people who transmigrated into birds.