There's this fanfic called 'A New Alliance'. It's not just about the relationship between Hanzo and McCree but also about how they team up to face challenges in the Overwatch world. The way the author writes their interactions is quite engaging.
Protection is also a major theme. McCree feels the need to protect Mercy from the dangers of the world they live in, while Mercy protects McCree in her own way, by healing his physical and sometimes emotional wounds.
One common theme is redemption. Hanzo often has a past he's trying to atone for, and mccree can be a part of that journey. For example, in many fanfics, mccree helps Hanzo see that he can move forward from his past mistakes.
Another theme is the contrast between their personalities. Genji is more of a reserved, yet spiritually - inclined character, while McCree is more of a rough - around - the - edges cowboy type. Fanfictions often play on this contrast, showing how they complement each other and learn from one another as their relationship progresses.
There's also 'Under the Stars'. This one is more of a slow - burn type of fanfiction. It delves deep into the feelings of the male reader towards McCree. The author does an amazing job of describing the settings and the internal struggles of the characters, making it a very immersive read.
The plot is key. It could be something as simple as them getting to know each other better during a mission or a more complex story about their pasts affecting their relationship. Also, the chemistry between them has to be believable. If it feels forced, the fanfic won't be good.
One common theme is adventure. McCree is often depicted as a gunslinger with a lot of experience, so going on adventures together is a popular plot. For example, they might go on a mission to take down a group of bad guys in the wild west - like setting.
A common theme is the clash and then the melding of their different cultures. McCree represents the wild west sort of cowboy culture, while Hanzo has his traditional Japanese heritage. Their fanfics often explore how these two different worlds come together.
One common theme is the contrast between McCree's rough exterior and Mercy's gentle nature. Another is the idea of them finding solace in each other in the midst of a chaotic world. Also, the theme of protection often comes up, with McCree protecting Mercy or vice versa.
One common theme is the contrast between their personalities. Sombra is mysterious and cunning, while McCree is more of a straightforward cowboy type. Their differences often lead to interesting interactions and relationship dynamics. Another theme is the idea of trust. Since they come from different sides in the game's lore, building trust is a big part of their relationship in many fanfics.