The theme of trust is crucial in 'Attack on Titan Reiner x Bertholdt fanfiction'. They have to trust each other completely in order to survive in the harsh world of Titans. Additionally, the theme of redemption sometimes shows up. If they make mistakes or have actions that they regret, they try to redeem themselves in the eyes of each other and also within the context of their friendship.
Search for fanfiction communities dedicated to 'Attack on Titan'. People in those communities often share and recommend good fanfictions. You can also ask for suggestions on social media platforms where fans of the series gather.
Well, first, make sure it's in line with the general tone of the original 'Attack on Titan' (I assume that's what you mean by 'Slap on Titan' which might be a misnomer). Check if the writing is good, like if the characters are still somewhat true to their original selves. Also, be aware of any potential spoilers if you haven't finished the original series.
There's a fanfiction named 'Reiner and Bertholdt: A Different Path'. In this story, it takes a different turn from the original plot and focuses more on their relationship outside of the main battles. It shows their more personal side, like how they interact when they are alone. And 'Hidden Feelings' is also a good one. It delves into the emotions that Reiner and Bertholdt might have for each other but keep hidden from others.
There were a lot of face-slapping novels, and some of the plots were very interesting. For example, in a world full of power struggles, the protagonists were often forced to slap their faces because of some unexpected events, but they would rise up again after every fall to show their powerful strength and wisdom.
There was also a famous face-smacking novel called "The Founder of the Devil's Path". It was about a world full of fantasy. The protagonist, Wei WuXian, was constantly slapped in the face as he grew up, but through wisdom and courage, he finally became a powerful mage.
All of these novels were very popular, and readers liked their plots and the personalities of the protagonists because every slap in the face represented growth and progress.
The first slap in a novel might be a sudden outburst of strong emotion like anger or shock. It can be a turning point that disrupts the existing situation. The second slap could either intensify the conflict or show a change in the relationship. For example, in some novels, the first slap is from a character who has been wronged for a long time and finally snaps. The second slap might come as a reaction to how the other character responds to the first slap, further complicating the plot.
Reiner did die in the manga. His death was a result of a series of events and conflicts that had been building up throughout the storyline. It had a major impact on the plot and the other characters.
If Lord Reiner is from a particular book or game, more context is needed. For example, if it's a character from a fantasy novel, we would need to know the plot of the novel, the world it is set in, and his relationships with other characters to tell his full story.