Well, without having read 'mamoru kun ni megami no shukufuku wo light novel', we can only make assumptions from the title. 'Mamoru kun' might be the main character, and 'megami no shukufuku' which means 'the goddess' blessing' could be the central theme. It could be a story of how this blessing impacts Mamoru kun's life. It might be a fantasy story where the goddess' blessing gives him some special powers or a new purpose in a magical or fictional realm.
You can try to look for it in some specialized Japanese bookstores, both physical and online ones. Some popular online platforms for Japanese light novels might also have it.
A popular fanfic is 'Shadows and Light: Ryou and Bakura'. It's known for its detailed characterizations. The author does an excellent job of portraying Ryou's gentle nature and Bakura's more mysterious side. It often has intense moments where their connection is put to the test. Another good one is 'The Unspoken Understanding'. This fanfic plays on the idea that Ryou and Bakura have a deeper, unspoken bond that goes beyond what's visible on the surface. It might include scenes where they communicate without words, just through their expressions and actions.
There are some. However, the quality can vary a great deal. Some might focus more on the emotional aspect of Bakura's love for Ryou, while others could incorporate more of the Yu - Gi - Oh! universe's elements into the story. It's really a matter of exploring different works to find the ones that suit your taste.
The relationship could start with a misunderstanding. For example, the OC could think that Ryou is a bit of a cold - hearted boss at the café where she works, but then she discovers his kind side when he helps her rescue a stray cat. This moment of seeing his true nature could be the start of her developing feelings for him.
Another theme is mystery. Since Ryou Bakura has his own secrets and a complex backstory, fanfictions often explore the mystery surrounding him from a female character's perspective. For example, a female character might be intrigued by his strange behaviors and try to uncover the truth.