Novela negra basically means a type of novel that focuses on crime and mystery. These novels usually have a lot of twists and turns to keep readers engaged and guessing until the end.
Pendergast would be an interesting character to include. His strict and by - the - book nature could contrast with Luci and Elfo's more laid - back and unorthodox ways. He might try to stop their adventures or get in their way, adding some tension to the story.
I'm not entirely sure about 'disenchantment elfo beanie' specifically. 'Disenchantment' generally means the loss of charm or illusion. 'Elfo' might be a misspelling of 'elf'. And 'beanie' is a type of hat. But it could be some sort of specific term in a particular game, story or niche area that I'm not familiar with.
One idea could be that Luci and Elfo go on a journey to find a magical artifact that can grant wishes. Along the way, they face various challenges that test their friendship and force them to rely on each other's unique skills. Luci's mischievous nature might get them into trouble at times, while Elfo's naivete could lead to some comical situations.