The pairing of L and Misa is interesting because they are such different characters in the original 'Death Note' series. L is highly intelligent and logical, while Misa is more emotional and impulsive. In fanfics, seeing how these two contrasting personalities interact and potentially develop feelings for each other is fascinating.
I really liked 'The Unlikely Bond'. It's a fanfic that starts with L being intrigued by Misa in a way he didn't expect. The writing is quite engaging as it shows how their interactions gradually change from suspicion (as in the original series) to a sort of understanding and then something closer to affection. It's a slow - burn story that is really enjoyable to read.
Misa's death in the manga occurs due to a combination of circumstances and the web of the storyline. It's a moment that has significant implications for the overall narrative.