There's 'You Deserve Each Other' which is a really fun grumpy - sunshine romance novel. The couple starts off in a rather strange situation where they seem to be at odds, but as the story unfolds, they realize their true feelings. 'The Unhoneymooners' is another great one. The main characters are complete opposites, one being more grumpy and the other more sunshine - like, and their journey to love during a case of mistaken identity is really engaging.
The 'redemption' trope can also be present. The grumpy vampire may have a dark past or some guilt associated with his vampiric existence. Through the love of the other character, he may find a path to redemption. For instance, he might start to control his more violent vampire instincts better and become a more 'human' - like in his emotions and actions, all because of the love he has for his neighbor - turned - lover.
In grumpy sunshine romance novels, the grumpy character often has some past experiences that made them closed - off, like a bad relationship or family issues. The sunshine character, on the other hand, might have had a more positive upbringing. As the story progresses, the sunshine character's optimism starts to break down the grumpy character's walls. For example, in 'The Hating Game', the female lead's cheerfulness gradually makes the male lead less grumpy.
There's also 'Twilight' to some extent. Edward, the vampire, could be seen as a sort of grumpy neighbor figure in Bella's world. The story is all about their forbidden love and the challenges they face due to his vampiric nature.
It could be that people who cross the bridge are always noisy or disrespectful of its space. So it becomes grumpy over time as a form of self - protection.
It could be about a monkey who is grumpy and the various adventures or situations it gets into. Maybe it shows how the monkey deals with other animals in the forest while being in a grumpy mood.
There was a grumpy little girl. She got a new dress for her birthday but it wasn't the color she wanted. Instead of being happy, she threw a tantrum. She sat in the corner with her arms crossed, scowling at everyone. It took her grandmother coming over and telling her how beautiful she looked in it to finally stop being so grumpy.
Well, in a 'grumpy old troll story', it may revolve around the daily life of this old troll. He might be grumpy because he's all alone and has no one to talk to. The story could show how his grumpiness affects the other characters in the story, like the animals or the people who live near where the troll stays. It could also be about how the troll's attitude changes over time, for example, if someone is kind to him despite his grumpiness, he might start to become nicer.
Once there was a grumpy little girl named Lily. One day, she couldn't find her favorite doll. She stomped around the house, frowning deeply. She refused to eat her breakfast and just sat in a corner pouting. But then, when she finally found the doll under her bed, she immediately cheered up and started playing happily again.