A 'Death Note Love Story' could be centered around two characters who are on opposite sides of the fight over the Death Note. One might be a Kira supporter and the other against Kira. Their love could develop as they see different aspects of each other through their battles. It could show how love can grow even in a world filled with death and power struggles brought about by the Death Note.
In a Naruto - Death Note fanfic, the power of the Death Note could be seen as a very different kind of jutsu. Instead of chakra - based techniques, it's a more insidious and mysterious power. The rules of the Death Note, like writing the name and face of the victim, could still apply. However, in the Naruto world, there are many ways to disguise one's appearance, such as transformation jutsus. So, it would be a challenge for the user of the Death Note to be sure they are targeting the right person.
Misa Amane could also be a main character in a 'Death Note Love Story'. She was in love with Light in the original story. In this new story, her love for Light could be explored further, or she could find a new love interest. Maybe someone who tries to save her from the dark path she's on because of her connection to the Death Note and Light.
Ryuk would probably just be amused. He is a Shinigami who has seen a lot in his existence. Fanfiction is just another strange human creation to him. He might chuckle at some of the more outlandish ideas in the fanfictions, like a character having superpowers beyond the Death Note.
Misa would likely be excited. She is a big fan of Light and the whole 'Kira' concept. In fanfiction, if there are scenarios where she has more power or a closer relationship with Light, she would be all for it. However, she might also get jealous if there are other female characters getting too close to Light in the fanfictions.
One common theme is the forbidden love. Since many of the relationships in Death Note fanfiction involve characters who are on opposite sides, like Light and L, it creates a sense of the forbidden. Their love is something that society or their own moral compasses would not allow.
Oh, for sure! Death Note is considered a masterpiece in the manga world. Its unique concept and the way it unfolds make it a must-read. The characters' development and the moral dilemmas presented make it stand out from the crowd.