Yes, Norman's death occurs in the Promised Neverland manga. This event leads to various developments and emotional moments for the remaining characters.
Ray and Norman's relationship in fanfiction is full of unspoken emotions. They are both very intelligent and have different ways of dealing with the threats around them. Fanfic writers often explore how they complement each other. Norman's determination and Ray's somewhat cynical nature create a unique dynamic. Their relationship could be developed in a romantic way in some fanfictions, with tender moments that show their deep connection, like secret glances or small acts of kindness that only they understand the significance of.
In The Promised Neverland Ray x Norman fanfiction, a frequently seen theme is trust. Given the dangerous situation they are in, they have to trust each other completely. Their relationship is built on this foundation of trust. Additionally, the theme of discovery is common. They are constantly discovering new things about themselves, each other, and the world around them. This includes not only the physical world outside the orphanage but also their own emotions and capabilities. The theme of hope also plays a part. Despite the dark circumstances, they give each other hope and keep each other going.