Can you recommend some good Constantine oc fanfic?

Sure. One great Constantine fanfiction is 'The Devil You Know'. It delves deeper into Constantine's complex relationship with the supernatural world and his inner demons. Another interesting one is 'Constantine's Redemption' which focuses on his journey towards atoning for his past mistakes. And 'Shadow of Constantine' offers a unique take on his adventures, exploring the darker corners of his character.

Some fanfics might explore a crossover where Constantine's magic and knowledge of the occult interact with the magical world of Harry Potter. For example, he could be brought into the wizarding world to deal with a dark magic threat that the wizards are not fully equipped to handle. He might introduce different methods of magic or ways of thinking about the supernatural that are new to the Harry Potter characters.

One common theme is the struggle between good and evil. The oc often finds themselves in the middle of Constantine's battles against dark forces. Another theme is the exploration of magic and the occult. Since Constantine is involved in such things, the oc also gets to experience and learn about this strange world. Also, friendship or partnership is a theme. They team up with Constantine and form a bond while facing various threats.

One popular Constantine crossover fanfiction is the one where he crosses over with the Supernatural universe. It often has him teaming up with the Winchester brothers to fight demons and other supernatural threats. The storylines usually blend the dark and gritty magic of Constantine's world with the monster - hunting aspects of Supernatural.

Another one is 'The Bond of the Three OCs'. This story focuses on the relationship between the three original characters. It shows how they support each other, their different strengths and weaknesses, and how they grow together as friends. It's a heartwarming read.

One great Harry Potter Constantine fanfiction is 'The Magical Convergence'. It combines the magic of the Harry Potter world with Constantine's dark and gritty elements in an interesting way. The characters are well - written and the plot keeps you hooked from start to finish.

One of the notable David Constantine short stories is 'In Another Country'. It has a very poignant exploration of human relationships and the sense of displacement.

One great Arrow Constantine crossover fanfiction is 'The Dark Convergence'. It has an interesting plot where Constantine's magic and Arrow's combat skills are combined to fight a new threat in Star City. The character interactions are well - written, especially the banter between Oliver and Constantine.

One great Constantine Lucifer crossover fanfiction is 'The Devil and the Exorcist'. It has an interesting plot where Constantine and Lucifer team up to deal with a powerful demonic entity that threatens both their worlds. The character interactions are well - written, with Constantine's cynicism contrasting Lucifer's charm.

Most legitimate fanfiction platforms do not allow lemon or adult - related content. Instead, you could try to find fan - created stories that focus on their relationship in a more platonic or action - adventure context. For example, there might be stories about them teaming up to fight a common magical enemy, which can be really exciting to read.