One great piece of George comforts Harry fanfiction is 'A Helping Hand' where George steps in to comfort Harry during a particularly tough time at Hogwarts. It shows their friendship in a really heartwarming way.
It could be a mysterious character introduced specifically for this purpose. Sometimes authors surprise us with unexpected sources of comfort to add depth to the story.
Another way Snape could comfort Harry is by standing up for him in certain situations. Maybe when other teachers or students are being unfair to Harry, Snape steps in and defends him. This act of protection can be a great source of comfort for Harry, as it shows that someone is on his side even if they have had a rocky relationship in the past.
One common theme is redemption. Draco often has to atone for his past actions towards Harry, and his act of comforting is a part of that redemption arc. It shows his growth from a bully to someone who can be empathetic.
The theme of forgiveness also often appears. Harry, having known Snape's past actions that were not always in his favor, has to come to terms with forgiving Snape in order to accept his comfort. And Snape, in turn, has to forgive himself for his past misdeeds. Another theme could be the power of connection. Despite their differences, they find a connection through shared pain or a common goal, and this connection is what allows Snape to comfort Harry.
In many of these fanfictions, the theme of self - discovery is intertwined with Harry's comfort. Ginny might be struggling with her identity, especially as she grows from a young girl into a woman in the wizarding world. Harry, with his own journey of self - discovery, is able to guide and comfort her. He might encourage her to pursue her dreams, whether it's in Quidditch or in her magical studies, and assure her that she is capable and strong, which gives her the confidence she needs.
In a hidden corner of Hogwarts, Draco was sitting alone, looking dejected. Harry noticed and walked over. 'Draco, I know things have been tough for you. But you're not alone.' Harry said softly. Draco was initially surprised but then a look of relief crossed his face as Harry's words started to break through his tough exterior.
One scenario could be that Daphne is bullied by some Slytherins for not conforming to their pure - blood ideals. Harry, having been bullied himself, steps in. He tells her that their opinions don't matter and that she is a great person regardless. He might even offer to practice defensive magic with her so she can stand up for herself.
One common theme is friendship. It shows how deep and meaningful a friendship can be between Harry and Tonks. Another theme could be healing, as Harry helps Tonks heal from emotional wounds.