One common theme could be his struggle with his OCD while being in a hurt or difficult situation. His need for symmetry might be challenged even more when he's injured or facing some kind of emotional turmoil.
A theme could also revolve around his insecurities being magnified when he's hurt. He's a powerful character but also has his own set of vulnerabilities. In fanfictions, his being hurt could be a catalyst for exploring those insecurities more deeply, like his fear of not being able to fulfill his duties as a Shinigami or his fear of being a disappointment.
Well, it might be a bit difficult to directly recommend some. However, if you join some Soul Eater - related fan communities on platforms like Reddit or Discord, you can ask the members there. They are usually very passionate about sharing good fanfictions and might be able to point you to some 'Death the Kid Hurt' ones.
One common plotline could be that he gets injured during a battle with a powerful enemy. Maybe he underestimates an opponent's strength and gets seriously wounded, which then leads to his friends having to protect him and find a way to heal him.
One popular Kid Altair Hurt Fanfiction could be 'The Trials of Kid Altair'. It focuses on the hardships he faces in a fictional world filled with challenges. Another might be 'Altair's Ordeal' which delves deep into his emotional and physical pain during certain events in the fan - created storyline. There's also 'Kid Altair's Struggles' that shows his journey through difficult situations and how he overcomes them.
One common theme could be Diaval's sacrifice for Maleficent. Writers might explore how he gets hurt while protecting her. Another theme could be misunderstandings between them that lead to Diaval getting hurt, either physically or emotionally.
Another theme could be his isolation. Billy is often portrayed as a bit of an outcast. Fanfictions might focus on how this isolation hurts him and makes him more vulnerable, or how he tries to break free from it. It could also involve his attempts to connect with other characters in the face of this isolation.
Character growth is also a big theme. In crossovers, Kid often has to learn new ways of thinking and fighting. For instance, if he's in a world with superpowers like in the My Hero Academia crossover, he has to figure out how to use his skills alongside those new powers. And of course, friendship is a common theme. He forms new bonds with characters from different universes, which helps him develop as a character and also makes for some heartwarming moments in the fanfiction.
One common theme is miscommunication. Lucy might misinterpret Natsu's actions or words and respond in a way that hurts him. For example, if Natsu is being overprotective, Lucy could take it the wrong way and lash out. Another theme is sacrifice. Lucy might have to make a difficult choice that involves sacrificing Natsu's well - being for a greater good, like saving the entire guild. And a third theme could be self - discovery. Through hurting Natsu, Lucy realizes something about herself, like her own insecurities or the depth of her feelings for Natsu.
One common theme is the vulnerability of Castiel. When he's hurt, it shows a side of him that's not often seen - his fragility. It makes the readers feel more sympathetic towards him.
One common theme could be his past traumas resurfacing. Since Law has a tragic backstory in the One Piece universe, fanfictions might explore how those past events continue to haunt him and cause him emotional or physical pain.
The theme of ostracism is quite common in 'Stiles hurt by pack' fanfictions. Stiles can be made to feel like an outsider within the pack, which is really painful for him. Additionally, the theme of redemption sometimes plays a role. The pack may realize they've wronged Stiles and try to make it up to him. However, this is not always the case, and sometimes Stiles has to move on without their full redemption. Another theme could be the struggle for acceptance, both Stiles' struggle to be accepted by the pack and the pack's struggle to accept the new, more independent Stiles after they've hurt him.