Self - discovery could also be a theme. Perhaps Mike King went through a period of his life where he was trying to figure out who he was, what his purpose was. This could involve traveling, trying different jobs or hobbies until he found his true self and that could be a significant part of his story.
One possible theme could be survival if the encounter with the coyote was in a dangerous or challenging situation. Mike Plant might have had to use his wits to survive.
One possible theme could be patriotism. Since 'Stars and Stripes Forever' is a patriotic song, Mike's story might revolve around his love for his country.
A third possible theme could be the struggle between good and evil. Given that the 'Man of Steel' world often features battles between Superman (representing good) and various villains (representing evil), Mike could find himself caught in the middle of this struggle. He may have to decide which side he wants to be on or find a way to promote good in a world full of danger and evil.
The theme of change is also likely. A family being apart is a significant change in Mike's life. His relationships with family members will change, his living situation may change, and his own identity within the family might also change. The story could explore how Mike navigates through all these changes and what he learns from this experience of a family being apart.
One possible theme could be the fusion of Christmas and jazz culture. Maybe it shows how Mike blends the festive spirit of Christmas with the cool and improvisational nature of jazz.
One possible theme could be friendship. Despite their differences in appearance and origin, they could form an unlikely friendship in the fanfic.
A third possible theme is identity. The Blue King's identity could be deeply intertwined with the color blue. It could be that his family has a long - standing connection to blue, and he has to struggle with maintaining this identity in a world that may not always understand or accept the significance of blue in his life and rule.
One possible theme could be leadership. Naruto taking on the role of a king would require him to lead, and the story might explore what makes a good leader.
One possible theme could be discovery. As the king moves through the street, he discovers new things about his kingdom, like the living conditions of his people or hidden aspects of the city.
One possible theme could be leadership. Since there is a 'king of the fishes', it is likely that the story explores what it means to be a leader in the fish world. Another theme might be survival, as the king fish may have to use its leadership to ensure the survival of the fish community.