I'm not sure specifically which 'leo black story' you are referring to. There could be many stories related to someone named Leo Black. It might be a personal anecdote, a fictional tale, or something else entirely.
Not knowing the details of the 'leo black story', we can only speculate on possible key elements. If it's a story about Leo Black's journey, perhaps the key elements could be his initial situation, what motivated him to change or move forward, and the final outcome. For example, if he started from a humble background and worked his way up to success, the description of his starting point, his drive and determination, and his end - state of success would be key elements. Another possible key element could be any challenges he faced along the way and how he dealt with them.
In most cases, reading fanfiction is legal as long as it is for personal enjoyment and not used for commercial purposes without permission. Fanfiction often operates in a gray area of copyright law. Since it is based on existing works like Harry Potter, as long as it doesn't directly compete with the official works in the market or violate any of the author's stated terms about derivative works, it's generally okay to read.
In the 'leo mcgarry man in a hole story', Leo McGarry is likely a central character. He could be a professional, perhaps in a high - stress job like politics or business. He might be someone who has a lot of responsibilities and has somehow ended up in a difficult position, symbolized by the 'hole'. It could be that he has made some missteps in his career or personal life that have led him to this point.
Since we don't have much information, Leo Grande could be just an ordinary person in the story. Maybe he's a local in a community where the story is set.
I'm not sure exactly what the story of Leo is. It could involve a protagonist facing challenges and overcoming them, or it could be a fantasy world filled with magic and mystery.